Fluid statics and dynamics, open channel flow, thermodynamics, and vapor, combustion, refrigeration, and compression cycles





Sample engineer-in-training examination

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000027079 / 1978-04-20
Date of Publication:
March 21, 1978
Date of Creation:
1978
Title:
Sample engineer-in-training examination : pt. 1-2 / prepared by the Professional Engineering Registration Program.
Edition:
3d ed.
Imprint:
San Carlos, Calif. : Professional Engineering Registration Program, c1978.
Description:
20 p.
Other Title:
Professional Engineering Registration Program
Copyright Claimant:
Michael R. Lindeburg
Authorship on Application:
Michael R. Lindeburg.
Names:
Michael R. Lindeburg 1949-

Computer science

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000027288 / 1978-04-20
Date of Publication:
March 6, 1978
Date of Creation:
1978
Title:
Computer science : [chapter 21].
Imprint:
San Carlos, Calif. : Professional Engineering Registration Program, c1978.
Description:
36 p.
Number of similar titles:
155
Copyright Claimant:
Michael R. Lindeburg
Authorship on Application:
Michael R. Lindeburg.
Names:
Michael R. Lindeburg 1949-

Systems theory

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000028771 / 1978-04-25
Date of Publication:
March 6, 1978
Date of Creation:
1978
Title:
Systems theory : chap. 20.
Imprint:
San Carlos, CA : Professional Engineering Registration Program, c1978.
Description:
62 p.
Number of similar titles:
14
Copyright Claimant:
Michael R. Lindeburg
Authorship on Application:
Michael R. Lindeburg.
Names:
Michael R. Lindeburg 1949-

Engineering review manual

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000149517 / 1978-11-28
Date of Publication:
July 10, 1978
Date of Creation:
1978
Title:
Engineering review manual.
Edition:
3d ed.
Basis of Claim:
New Matter: revisions & additions.
Previous Registration:
Prev. reg. 1978, TX 28-771; 1977, A854123 et al.
Imprint:
San Carlos, CA : Professional Engineering Registration Program, c1978.
Description:
1 v.
Copyright Claimant:
Michael R. Lindeburg
Authorship on Application:
authored chap. 1-4, 8, 10, 12-13, 15-16, 18, 20-22, 24-26 and edited the rest as an employer of work made for hire: Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program.
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program.

Engineer in training review manual

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000303981 / 1979-08-06
Date of Publication:
May 25, 1979
Date of Creation:
1979
Title:
Engineer in training review manual : a complete review course for the E-I-T examination / Michael R. Lindeburg.
Application Title:
Engineering review manual.
Edition:
4th ed.
Basis of Claim:
New Matter: revisions.
Previous Registration:
Prev. reg. 1978, TX 28-771 et al.
Imprint:
San Carlos, CA : Professional Engineering Registration Program, c1979.
Description:
1 v.
Number of similar titles:
1
Other Title:
Engineering review manual
Copyright Claimant:
Michael R. Lindeburg
Authorship on Application:
Michael R. Lindeburg d.b.a. Professional Engineering Registration Program.
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Solutions manual for the Engineer-in-training review manual, with a sample examination

Copyrights records by Professional Engineering Registration Program



Quick reference cards for the engineer-in-training examination

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000585722 / 1980-11-20
Date of Publication:
October 13, 1980
Date of Creation:
1980
Title:
Quick reference cards for the engineer-in-training examination / Michael R. Lindeburg.
Imprint:
San Carlos, CA : The Program, c1980.
Description:
1 v.
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Solutions manual for the Engineer-in-training review manual, with a sample examination

Seismic design for the California civil professional engineering examination

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000585771 / 1980-11-20
Date of Publication:
October 3, 1980
Date of Creation:
1980
Title:
Seismic design for the California civil professional engineering examination / Michael R. Lindeburg.
Imprint:
San Carlos, CA : Professional Engineering Registration Program, c1980.
Description:
104 p.
Copyright Claimant:
Michael R. Lindeburg d.b.a. Professional Engineering Registration Program, sole owner
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Expanded interest tables

Solutions manual for the Civil engineering review manual

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000598189 / 1980-12-15
Date of Publication:
September 12, 1980
Date of Creation:
1980
Title:
Solutions manual for the Civil engineering review manual / Michael R. Lindeburg.
Edition:
2d ed.
Description:
31 p.
Other Title:
Civil engineering review manual
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Expanded interest tables

Engineer-in-training mini-exam

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000598190 / 1980-12-15
Date of Publication:
June 6, 1980
Date of Creation:
1980
Title:
Engineer-in-training mini-exam : P. E. Readiness, course no. 1 : E-I-T exam preparation.
Description:
1 v.
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Notes:
Includes solutions.
Authorship on Application:
Michael R. Lindeburg (author of anon. contribution)
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Expanded interest tables

Engineer in training review manual

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000598448 / 1980-12-15
Date of Publication:
June 20, 1980
Date of Creation:
1980
Title:
Engineer in training review manual : a complete review course for the E-I-T examination / Michael R. Lindeburg.
Application Title:
Engineering review manual.
Edition:
5th ed.
Basis of Claim:
New Matter: chap. 11 rewritten.
Previous Registration:
Prev. reg. 1979, TX 303-981.
Imprint:
San Carlos, CA : The Program, [19--]
Description:
1 v.
Number of similar titles:
1
Other Title:
Engineering review manual
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Solutions manual for the Engineer-in-training review manual, with a sample examination

Civil engineering review manual

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000609610 / 1980-11-20
Date of Publication:
January 3, 1980
Date of Creation:
1980
Title:
Civil engineering review manual : a complete review course for the P. E. examination for civil engineers / Michael R. Lindeburg.
Edition:
2d ed.
Previous Registration:
Chap. 1-5 incorporate material that is covered by the author's copyright TX 303-981 and others.
Imprint:
San Carlos, CA : The Program, c1980.
Description:
1 v.
Copyright Claimant:
Michael R. Lindeburg
Authorship on Application:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program.
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Expanded interest tables

Engineering economic analysis and expanded interest tables

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000680045 / 1980-12-15
Date of Publication:
June 30, 1980
Date of Creation:
1980
Title:
Engineering economic analysis and expanded interest tables / Michael R. Lindeburg.
Edition:
2d ed.
Basis of Claim:
New Matter: "p. 29-134 are new, sections 7, 10, 12, 13, 16 in the text are new."
Previous Registration:
Text material (p. 1-28) is quite similar to chap. 2 in Engineer-in-training review manual, reg. 1979, TX 303-981.
Copyright Note:
C.O. correspondence.
Imprint:
San Carlos, CA : The Program, c1980.
Description:
134 p.
Other Title:
Engineer-in-training review manual
Copyright Claimant:
Michael R. Lindeburg d.b.a. as [sic] (sole owner) Professional Engineering Registration Program
Notes:
For the Engineer-in-training and Professional engineering examinations.
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Expanded interest tables

Gas tables for the Professional mechanical engineering examination, third edition

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000680046 / 1980-12-15
Date of Publication:
September 30, 1980
Date of Creation:
1980
Title:
Gas tables for the Professional mechanical engineering examination, third edition / Michael R. Lindeburg.
Previous Registration:
Tables for k=1.4 prev. distributed in looseleaf form to students.
Copyright Note:
C.O. correspondence.
Imprint:
San Carlos, CA : The Program, c1980.
Description:
25 p.
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Solutions manual for the Engineer-in-training review manual, with a sample examination

Solutions manual for the Mechanical engineering review manual

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000680047 / 1980-12-15
Date of Publication:
September 22, 1980
Date of Creation:
1980
Title:
Solutions manual for the Mechanical engineering review manual / Michael R. Lindeburg.
Copyright Note:
C.O. correspondence.
Imprint:
San Carlos, CA : The Program, c1980.
Description:
74 p.
Number of similar titles:
1
Other Title:
Mechanical engineering review manual
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Expanded interest tables

Civil engineering technician review manual

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000740057 / 1981-05-14
Date of Publication:
January 17, 1981
Date of Creation:
1980
Title:
Civil engineering technician review manual / Wendell B. Stephens.
Edition:
2d ed.
Previous Registration:
Appl. states loosely based on the organization of the 1st ed., an unbound draft which received insignificant distribution.
Copyright Note:
C.O. correspondence.
Description:
1 v.
Copyright Claimant:
Michael R. Lindeburg d.b.a. as [sic] (sole owner) Professional Engineering Registration Program
Names:
Wendell B. Stephens 1939-
Michael R. Lindeburg (171 documents)
example document: Chemical engineering reference manual

Copyrights records by Lindeburg, Michael R.


Professional Engineering Registration Program (40 documents)
example document: Solutions manual for the Engineer-in-training review manual, with a sample examination

Engineering economic analysis

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000754174 / 1981-08-24
Date of Publication:
August 14, 1981
Date of Creation:
1981
Title:
Engineering economic analysis.
Basis of Claim:
New Matter: "additional text, additional examples, new figures, editorial changes."
Previous Registration:
Based on chap. 2 of Engineer-in-training review manual, prev. reg. 1980, TX 598-448.
Number of similar titles:
11
Other Title:
Engineer-in-training review manual
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Authorship on Application:
Michael R. Lindeburg.
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Solutions manual for the Engineer-in-training review manual, with a sample examination

Systems of units

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000754175 / 1981-08-24
Date of Publication:
August 14, 1981
Date of Creation:
1981
Title:
Systems of units.
Other Title:
Engineer-in-training review manual
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Authorship on Application:
Michael R. Lindeburg.
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Expanded interest tables

Mathematics and related subjects

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000754176 / 1981-08-24
Date of Publication:
August 3, 1981
Date of Creation:
1981
Title:
Mathematics and related subjects.
Application Title:
Mathematics.
Basis of Claim:
New Matter: "additional text, additional examples, new figures, editorial changes, additional tables of data."
Previous Registration:
Based on chap. 1 of Engineer-in-training review manual, prev. reg. 1980, TX 598-448.
Other Title:
Engineer-in-training review manual
Copyright Claimant:
Michael R. Lindeburg d.b.a. Professional Engineering Registration Program
Authorship on Application:
Michael R. Lindeburg.
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Solutions manual for the Engineer-in-training review manual, with a sample examination

Order entry system

Type of Work:
Machine-readable work or computer program
Registration Number / Date:
TX0000805077 / 1981-10-13
Date of Publication:
October 5, 1981
Date of Creation:
1981
Title:
Order entry system / author, Sharon Eccles-Murch.
Copyright Note:
C.O. correspondence.
Description:
Printout.
Number of similar titles:
11
Copyright Claimant:
Michael R. Lindeburg, d.b.a. (sole owner) Professional Engineering Registration Program
Authorship on Application:
Professional Engineering Registration Program, employer for hire.
Names:
Sharon Eccles-Murch
Michael R. Lindeburg (171 documents)
example document: Solutions manual for the Engineer-in-training review manual, with a sample examination
Sharon Eccles Murch
Professional Engineering Registration Program (40 documents)
example document: Solutions manual for the Engineer-in-training review manual, with a sample examination

Fluid statics and dynamics, open channel flow, thermodynamics, and vapor, combustion, refrigeration, and compression cycles

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000846329 / 1982-02-05
Date of Publication:
January 18, 1982
Date of Creation:
1981
Title:
Fluid statics and dynamics, open channel flow, thermodynamics, and vapor, combustion, refrigeration, and compression cycles.
Basis of Claim:
New Matter: additions, editorial changes, extensive reorganization.
Previous Registration:
Prev. reg. as Engineer-in-training review manual, 5th ed., 1980, TX 598-448.
Description:
1 v.
Variant title:
Fluid statics and dynamics, open channel flow, thermodynamics, and vapor, combustion, refrigeration
Other Title:
Engineer-in-training review manual
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Notes:
Chap. 4-7 of Engineer-in-training review manual, 6th ed., to be pub.
Authorship on Application:
Michael R. Lindeburg.
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Expanded interest tables

Chemistry, Statics, Direct current electricity, and Peripheral sciences

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000862890 / 1982-03-01
Date of Publication:
February 22, 1982
Date of Creation:
1982
Title:
Chemistry, Statics, Direct current electricity, and Peripheral sciences.
Basis of Claim:
New Matter: "additional text, additional examples, new figures, many editorial changes, more tables of data."
Previous Registration:
Prev. reg. 1980, TX 598-448.
Description:
1 v.
Variant title:
Chemistry
Other Title:
Engineer-in-training review manual
Peripheral sciences
Direct current electricity
Statics
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Notes:
Page proofs for chap. 8, 9, 13 & 15 of Engineer-in-training review manual, 6th ed., by Michael R. Lindeburg.
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Expanded interest tables

Mechanics of materials, alternating current electricity, and general systems modeling

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000865967 / 1982-03-09
Date of Publication:
March 4, 1982
Date of Creation:
1982
Title:
Mechanics of materials, alternating current electricity, and general systems modeling / by Michael R. Lindeburg.
Basis of Claim:
New Matter: "additional text, additional examples, new figures, editorial changes, more tables of data."
Previous Registration:
Prev. reg. 1980, TX 598-448.
Description:
1 v.
Other Title:
Engineer-in-training review manual
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Notes:
Loosely based on chap. 14, 16, and 20 of the review manual, 5th ed.
Page proofs from the author's book entitled, Engineer-in-training review manual, 6th ed.
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Expanded interest tables

Materials science and dynamics

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000879988 / 1982-03-30
Date of Publication:
March 22, 1982
Date of Creation:
1982
Title:
Materials science and dynamics.
Basis of Claim:
New Matter: "added text, new examples, new figures, editorial changes, extensive reorganization."
Previous Registration:
Prev. reg. 1980, TX 598-448.
Description:
1 v.
Other Title:
Engineer-in-training review manual
Copyright Claimant:
Michael R. Lindeburg d.b.a. Professional Engineering Registration Program
Notes:
Based on chap. 13 & 17 of Engineer-in-training review manual.
Chap. 10 & 12 of a new book entitled Engineer-in-training review manual, 6th ed., by Michael R. Lindeburg.
Authorship on Application:
Michael R. Lindeburg.
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Solutions manual for the Engineer-in-training review manual, with a sample examination

Modelling of engineering systems and Postscripts

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000885610 / 1982-04-07
Date of Publication:
March 29, 1982
Date of Creation:
1982
Title:
Modelling of engineering systems and Postscripts.
Basis of Claim:
New Matter: additional text, new examples & figures, editorial changes & additional tables.
Previous Registration:
Prev. reg. 1980, TX 598-448.
Description:
1 v.
Variant title:
Modelling of engineering systems
Other Title:
Engineer-in-training review manual
Postscripts
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Notes:
Page proofs for chap. 16 & 20 of Engineer-in-training review manual, 6th ed., by Michael R. Lindeburg.
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Expanded interest tables

Multi-form (incorporating mailing labels, charge draft, packing list, and refund check)

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000909081 / 1981-12-23
Date of Publication:
November 1, 1981
Date of Creation:
1981
Title:
Multi-form (incorporating mailing labels, charge draft, packing list, and refund check) : in 3 parts, with scannable carbon between]
Copyright Note:
C.O. correspondence.
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Notes:
Cataloged from appl. only.
Authorship on Application:
instructions (notice to customer): Michael R. Lindeburg.
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Solutions manual for the Engineer-in-training review manual, with a sample examination

Computer science and atomic theory and nuclear engineering

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000919007 / 1982-03-22
Date of Publication:
March 5, 1982
Date of Creation:
1982
Title:
Computer science and atomic theory and nuclear engineering.
Basis of Claim:
New Matter: "added text, new examples, new figures, editorial changes, extensive reorganization."
Previous Registration:
Chap. 18 & 19, based on chap. 21 & 25 of the 5th ed. of the Engineer-in-training review manual, prev. reg. TX 598-448.
Description:
1 v.
Other Title:
Engineer-in-training review manual
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Authorship on Application:
Michael R. Lindeburg.
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Solutions manual for the Engineer-in-training review manual, with a sample examination

Engineer-in-training review manual

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0000929155 / 1982-06-25
Date of Publication:
May 28, 1982
Date of Creation:
1982
Title:
Engineer-in-training review manual : a complete review and reference for the E-I-T examination / Michael R. Lindeburg.
Edition:
6th ed.
Basis of Claim:
New Matter: "front matter (pages through xxii); additions to chap. 20; index."
Previous Registration:
Prev. reg. 1982, TX 885-610 et al.
Description:
1 v.
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Solutions manual for the Engineer-in-training review manual, with a sample examination

Dispatch order entry system

Type of Work:
Machine-readable work or computer program
Registration Number / Date:
TX0000950591 / 1982-06-17
Date of Publication:
May 30, 1982
Date of Creation:
1982
Title:
Dispatch order entry system : Order entry system.
Basis of Claim:
New Matter: additions.
Previous Registration:
Prev. reg. 1981, TX 805-077.
Copyright Note:
C.O. correspondence.
Description:
Printout.
Other Title:
Order entry system
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering
Notes:
Cataloged from appl. only.
Authorship on Application:
text of computer programs: Michael R. Lindeburg.
Names:
Michael R. Lindeburg 1949-
Professional Engineering (44 documents)
example document: Solutions manual for the Engineer-in-training review manual, with a sample examination

Dispatch manual

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0001262305 / 1984-01-09
Date of Publication:
March 1, 1983
Date of Creation:
1983
Title:
Dispatch manual.
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Notes:
Cataloged from appl. only.
Authorship on Application:
Michael R. Lindeburg (author of anon. contribution)
Names:
Michael R. Lindeburg 1949-
Professional Engineering Registration Program (40 documents)
example document: Solutions manual for the Engineer-in-training review manual, with a sample examination

Engineering law, design liability, and professional ethics

Type of Work:
Non-dramatic literary work
Registration Number / Date:
TX0001281711 / 1984-01-09
Date of Publication:
October 3, 1983
Date of Creation:
1983
Title:
Engineering law, design liability, and professional ethics : an introduction for engineers / Rebecca J. Morton.
Basis of Claim:
New Matter: "completely rewritten, new text throughout, design liability section original, ethics section original."
Imprint:
San Carlos, Calif. : Professional Publications, c1983.
Description:
83 p.
Other Title:
Engineering law & ethics
Copyright Claimant:
Michael R. Lindeburg d.b.a. (sole owner) Professional Engineering Registration Program
Notes:
Loosely based on the organization of Engineering law & ethics, (1977), uncopyrighted outline for Delta College (Michigan) course.
Authorship on Application:
Professional Engineering Registration Program, employer for hire of Rebecca J. Morton.
Names:
Rebecca J. Morton
Michael R. Lindeburg (171 documents)
example document: 1001 solved engineering fundamentals problems
Professional Engineering Registration Program (40 documents)
example document: Solutions manual for the Engineer-in-training review manual, with a sample examination

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible. Multiple persons can share the same name.