Classification
900 - History & geography
200 - Religion
162
100 - Philosophy & psychology
36
320 - Political science
19
140 - Specific philosophical schools
17
700 - The arts; fine & decorative arts
15
800 - Literature & rhetoric
15
300 - Social sciences
14
297 - Islam, Babism & Bahai Faith
12
301 - Sociology & anthropology
12
410 - Linguistics
11
170 - Ethics
9
380 - Commerce, communications & transportation
8
296 - Judaism
7
340 - Law
5
400 - Language
5
000 - Computer science, information & general works
4
576 - Genetics & evolution
4
780 - Music
4
330 - Economics
3
370 - Education
3
610 - Medicine & health
3
620 - Engineering & allied operations
3
398 - Folklore
2
600 - Technology
2
630 - Agriculture & related technologies
2
880 - Hellenic literatures; classical Greek
2
363 - Other social problems & services
1
581 - Specific topics in natural history
1
720 - Architecture
1