Classification
100 - Philosophy & psychology
170 - Ethics
300 - Social sciences
320 - Political science
340 - Law
900 - History & geography
140 - Specific philosophical schools
3
301 - Sociology & anthropology
3
370 - Education
3
330 - Economics
2
600 - Technology
2
610 - Medicine & health
2
000 - Computer science, information & general works
1
120 - Epistemology, causation & humankind
1
200 - Religion
1
304 - Factors affecting social behavior
1
363 - Other social problems & services
1
364 - Criminology
1
380 - Commerce, communications & transportation
1
620 - Engineering & allied operations
1