Classification
900 - History & geography
39
100 - Philosophy & psychology
14
320 - Political science
11
200 - Religion
10
301 - Sociology & anthropology
9
940 - History of Europe
8
800 - Literature & rhetoric
7
306 - Culture & institutions
5
809 - History, description & criticism
5
001 - Knowledge
4
297 - Islam, Babism & Bahai Faith
4
300 - Social sciences
4
340 - Law
3
400 - Language
3
700 - The arts; fine & decorative arts
3
909 - World history
3
944 - France & Monaco
3
296 - Judaism
2
305 - Social groups
2
330 - Economics
2
370 - Education
2
973 - United States
2
109 - Historical & collected persons treatment
1
140 - Specific philosophical schools
1
142 - Critical philosophy
1
150 - Psychology
1
170 - Ethics
1
190 - Modern western philosophy
1
327 - International relations
1
331 - Labor economics
1
363 - Other social problems & services
1
509 - Historical, geographic & persons treatment
1
510 - Mathematics
1
576 - Genetics & evolution
1
600 - Technology
1
808 - Rhetoric & collections of literature
1
941 - British Isles
1
945 - Italian Peninsula & adjacent islands
1
954 - South Asia; India
1
956 - Middle East (Near East)
1
980 - History of South America
1