Classification
320 - Political science
330 - Economics
864
900 - History & geography
68
340 - Law
59
800 - Literature & rhetoric
43
300 - Social sciences
27
576 - Genetics & evolution
12
700 - The arts; fine & decorative arts
12
140 - Specific philosophical schools
9
200 - Religion
7
370 - Education
7
630 - Agriculture & related technologies
7
304 - Factors affecting social behavior
4
100 - Philosophy & psychology
3
170 - Ethics
3
380 - Commerce, communications & transportation
3
610 - Medicine & health
2
000 - Computer science, information & general works
1
301 - Sociology & anthropology
1
323 - Civil & political rights
1
363 - Other social problems & services
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
600 - Technology
1
720 - Architecture
1