Classification
140 - Specific philosophical schools
170 - Ethics
330 - Economics
9
300 - Social sciences
6
320 - Political science
5
380 - Commerce, communications & transportation
5
610 - Medicine & health
5
100 - Philosophy & psychology
4
333 - Economics of land & energy
4
658 - General management
4
000 - Computer science, information & general works
3
363 - Other social problems & services
3
370 - Education
3
340 - Law
2
361 - Social problems & social welfare in general
2
120 - Epistemology, causation & humankind
1
304 - Factors affecting social behavior
1
410 - Linguistics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
600 - Technology
1
650 - Management & auxiliary services
1
657 - Accounting
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1
920 - Biography, genealogy & insignia
1