Classification
900 - History & geography
39
800 - Literature & rhetoric
38
700 - The arts; fine & decorative arts
20
100 - Philosophy & psychology
10
300 - Social sciences
7
410 - Linguistics
6
200 - Religion
5
320 - Political science
4
340 - Law
4
370 - Education
4
400 - Language
4
140 - Specific philosophical schools
3
780 - Music
3
301 - Sociology & anthropology
2
304 - Factors affecting social behavior
2
576 - Genetics & evolution
2
000 - Computer science, information & general works
1
170 - Ethics
1
296 - Judaism
1
330 - Economics
1
581 - Specific topics in natural history
1
600 - Technology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
720 - Architecture
1