SUBJECT
Books
Classification
135
Classification, Library of Congress
25
History
21
Conservation and restoration
16
Literature
12
Printing
11
Cataloging
10
Law
9
Bibliography
8
Libraries
8
Reviews
8
Library materials
7
Library science
7
Philology
7
Social sciences
7
Bookbinding
6
Preservation
5
Printing--History
5
Religion
5
Science
5
Paper
4
Agriculture
3
Archival materials
3
Archives
3
Books and reading
3
Classical philology
3
Geography
3
Indexes
3
Indexing
3
Indo-Iranian philology
3
Languages
3
Languages, Modern
3
Manuscripts
3
Music
3
Oriental philology
3
Periodicals
3
Philosophy
3
Political science
3
Repairing
3
Social aspects
3
American literature
2
Anthropology
2
Book industries and trade
2
Classification, Dewey decimal
2
Cultural property
2
Digital preservation
2
Education
2
English literature
2
Folklore
2
more ...