Classification
140 - Specific philosophical schools
301 - Sociology & anthropology
600 - Technology
100 - Philosophy & psychology
7
300 - Social sciences
7
320 - Political science
6
900 - History & geography
6
200 - Religion
5
700 - The arts; fine & decorative arts
5
330 - Economics
4
170 - Ethics
3
370 - Education
3
610 - Medicine & health
3
620 - Engineering & allied operations
3
000 - Computer science, information & general works
2
304 - Factors affecting social behavior
2
340 - Law
2
363 - Other social problems & services
2
576 - Genetics & evolution
2
630 - Agriculture & related technologies
2
333 - Economics of land & energy
1
361 - Social problems & social welfare in general
1
380 - Commerce, communications & transportation
1
400 - Language
1
410 - Linguistics
1
581 - Specific topics in natural history
1
780 - Music
1