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CLASSIFICATION
BOOKS
5
CATALOGING
2
SUBJECT HEADINGS
2
BIOLOGY
1
CATALOGING OF PICTURES
1
CLASIFICACIÓN
1
CLASSIFICATION, LIBRARY OF CONGRESS
1
COLLECTION MANAGEMENT (LIBRARIES)
1
COLLECTORS AND COLLECTING
1
ECOLOGY
1
ENSEÑANZA UNIVERSITARIA
1
HISTORY
1
INDEXING
1
INFORMATION STORAGE AND RETRIEVAL SYSTEMS
1
LAW
1
NATURAL HISTORY
1
PHOTOGRAPHS
1
PHOTOGRAPHY
1
POPULAR CULTURE
1
PROGRAMMING LANGUAGES (ELECTRONIC COMPUTERS)
1
SOCIOLOGÍA
1
SOCIOLOGY
1
STUDY AND TEACHING
1
STUDY AND TEACHING (HIGHER)
1
SUBJECT HEADINGS, FRENCH
1
SUBJECT HEADINGS, SPANISH
1
ZOOLOGY
1
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1
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2
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10