Classification
140 - Specific philosophical schools
300 - Social sciences
6
630 - Agriculture & related technologies
600 - Technology
5
620 - Engineering & allied operations
5
900 - History & geography
5
333 - Economics of land & energy
4
700 - The arts; fine & decorative arts
4
320 - Political science
3
363 - Other social problems & services
3
576 - Genetics & evolution
3
170 - Ethics
2
330 - Economics
2
340 - Law
2
370 - Education
2
380 - Commerce, communications & transportation
2
580 - Plants (Botany)
2
610 - Medicine & health
2
720 - Architecture
2
800 - Literature & rhetoric
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
301 - Sociology & anthropology
1
400 - Language
1
410 - Linguistics
1
780 - Music
1