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