Classification
100 - Philosophy & psychology
600 - Technology
620 - Engineering & allied operations
8
630 - Agriculture & related technologies
170 - Ethics
5
300 - Social sciences
5
140 - Specific philosophical schools
4
320 - Political science
4
700 - The arts; fine & decorative arts
4
330 - Economics
3
363 - Other social problems & services
3
301 - Sociology & anthropology
2
333 - Economics of land & energy
2
370 - Education
2
400 - Language
2
410 - Linguistics
2
610 - Medicine & health
2
780 - Music
2
900 - History & geography
2
000 - Computer science, information & general works
1
200 - Religion
1
380 - Commerce, communications & transportation
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1