CATALOGING POLICY AND SUPPORT OFFICE
LIBRARY OF CONGRESS CLASSIFICATION
Subclass ZA (Information Resources)
On March 13, 1996, the Library of Congress approved subclass ZA, Information Resources, as a new subclass of the Library of Congress Classification. Below is the text of subclass ZA, updated through December 1996.
ZA
Information resources (General)
Class here works on sources of information in
general, not limited to a specific topic,
format, medium, or provider, as well as
general works on how to find information. For
works limited to a specific format or medium,
see ZA4150+. For works limited to a specific
type of information provider, see ZA5050+.
For works limited to information on a specific
subject, see the subject
Cf. HC79.I55, Information economy
Cf. Q350+, Information theory
Cf. T58.5+, Information technology
Cf. Z699+, Information storage and retrieval
systems
For works on information science as a
discipline, see Z665+
For technical works on online data processing,
see QA76.55+
3040 Periodicals. Societies. Serials
3045 Congresses
3050 Directories. Catalogs. Lists of information
sources
3060 General works
3070 Juvenile works
Research. How to find information
3075 General works
3080 Juvenile works
Information services. Information centers
Including documentation centers, data
libraries, bibiliographical centers, etc.
Cf. AG500+, Clipping bureaus
Cf. HD9999.I49+, Information services
industry
Cf. Z662+, Libraries
Cf. Z695.93+, Abstracting and indexing
services
3150 Periodicals. Societies. Serials
3153 Congresses
3155 Directories
3157 General works
3159 By region or country, A-Z
Under each country:
.x General works
.x2 Individual centers. By place, A-Z
Information superhighway
3201 Periodicals. Societies. Serials
3203 Congresses
3225 General works
3235 Juvenile works
3250 By region or country, A-Z
Information resources on specific subjects, see
the subject
Information in specific formats or media
Books and other print media, see Z4+
Computer network resources
For technical works on the
telecommunications aspects of computer
networks, see TK5105.5
Directories. Catalogs. Lists of resources
4150 General
Resources of particular networks, online
services, etc.
Including works on how to use individual
networks or online services
Internet
4201 General works
4226 World Wide Web
Cf. TK5105.888, Technology
4251.A-Z Particular online services, etc., A-Z
4251.A5 America Online
4251.C6 CompuServe
4251.E8 eWorld
4251.D4 DELPHI
4251.G4 GEnie
4251.M5 Microsoft Network
4251.P7 Prodigy
Research. How to use networks, online
services, etc.
4375 General works
4380 Juvenile works
Particular networks, services, etc., see
ZA4201+
Computer network resources on specific
subjects, see the subject
4390 Computer bulletin boards
Databases
Including databases on CD-ROM and other
physical media
For databases available on specific
computer networks or online services, see
ZA4201+
4450 Catalogs. Lists of databases
4460 Research. How to use databases
Databases on specific subjects, see the
subject
Motion pictures. Video recordings
4550 Lists and catalogs
Class here lists of nonfiction films and
video recordings not limited to a
specific topic, as well as general lists
that include both fiction and nonfiction
films
For lists of dramatic films, see
PN1998.A5-Z
For lists of dramatic videos, see
PN1992.95
Motion pictures and video recordings on
specific subjects, see the subject
Pictures. Photographs
Cf.. TR640+, Artistic photographs
4650 Lists and catalogs
Pictures and photographs on specific subjects,
see the subject
4675 Picture research
Sound recordings
4750 Discographies. Lists and catalogs
Class here lists of non-music sound
recordings not limited to a specific
topic, as well as general lists that
include both music and non-music sound
recordings
For works limited to music, see class M
Sound recordings on specific subjects, see
the subject
Information from specific providers
Government information
Class here works on government information
not limited to a specific topic
For bibliographies of printed government
publications, see Z7164.G7
For works on government publicity, see
JF1525.P8, JK849, etc.
For works on public records, see JK468.P76,
JL86.P76, etc.
For works on secret and confidential
government information, see JK468.S4,
JL86.S43, etc.
Lists and catalogs of government information
resources
5050 General
5055 By region or country, A-Z
Government information on specific subjects,
see the subject
Government information in specific formats or
media
Computer network resources
Lists and catalogs of government
information resources
5070 General
Government information resources on the
Internet, see ZA4201+
Government information resources on
particular online services, etc., see
ZA4251
Research. How to use networks, online
services, etc., to retrieve government
information
5110 General works
Internet, see ZA4201+
Particular online services, etc., see
ZA4251
Computerized government information
resources on specific subjects, see the
subject
Databases
Including databases on CD-ROM and other
physical media
Lists and catalogs of databases of
government information
5180 General
5185 By region or country, A-Z
Databases of government information on
specific subjects, see the subject