Library of Congress Classification/Class A

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CLASS A - GENERAL WORKS

(Click each subclass for details)

Subclass AC Collections. Series. Collected works
Subclass AE Encyclopedias
Subclass AG Dictionaries and other general reference works
Subclass AI Indexes
Subclass AM Museums. Collectors and collecting
Subclass AN Newspapers
Subclass AP Periodicals
Subclass AS Academies and learned societies
Subclass AY Yearbooks. Almanacs. Directories
Subclass AZ History of scholarship and learning. The humanities

​Subclass AC

AC1-999 Collections. Series. Collected works
AC1-195   Collections of monographs, essays, etc.
AC1-8   American and English
AC9-195 Other languages
AC200 Collections for Jewish readers
AC801-895 Inaugural and program dissertations
AC901-995 Pamphlet collections
AC999 Scrapbooks
​Subclass AE
AE1-(90) Encyclopedias
AE5-(90)   By language
​Subclass AG
AG2-600 Dictionaries and other general reference works
​Subclass AI
AI1-21 Indexes
​Subclass AM
AM1-(501) Museums. Collectors and collecting
AM10-100   By country
AM111-160 Museology. Museum methods, technique, etc.
AM200-(501) Collectors and collecting
​Subclass AN
AN Newspapers
​Subclass AP
AP1-(271) Periodicals
AP101-115   Humorous periodicals
AP200-230 Juvenile periodicals
AP(250)-(265) Periodicals for women
AP(270)-(271) Periodicals for Blacks
​Subclass AS
AS1-945 Academies and learned societies
AS2.5-4   International associations, congresses, conferences, etc.
AS11-785 By region or country
​Subclass AY
AY10-2001 Yearbooks. Almanacs. Directories
AY10-29   Annuals
AY30-1730 Almanacs
AY2001 Directories. General works on the compilation of directories, etc.
Class directories by subject in B-Z
​Subclass AZ
AZ(20)-999 History of scholarship and learning. The humanities
AZ101-(181)   Philosophy. Theory
AZ191-193 Evaluation
AZ200-361 History
AZ501-908 By region or country
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