Classification
301 - Sociology & anthropology
300 - Social sciences
13
320 - Political science
9
100 - Philosophy & psychology
5
370 - Education
5
700 - The arts; fine & decorative arts
5
140 - Specific philosophical schools
4
330 - Economics
4
363 - Other social problems & services
3
600 - Technology
3
610 - Medicine & health
3
900 - History & geography
3
000 - Computer science, information & general works
2
200 - Religion
2
333 - Economics of land & energy
2
380 - Commerce, communications & transportation
2
581 - Specific topics in natural history
2
340 - Law
1
400 - Language
1
530 - Physics
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
630 - Agriculture & related technologies
1