Classification
200 - Religion
300 - Social sciences
320 - Political science
900 - History & geography
100 - Philosophy & psychology
4
000 - Computer science, information & general works
3
800 - Literature & rhetoric
3
301 - Sociology & anthropology
2
330 - Economics
2
333 - Economics of land & energy
2
363 - Other social problems & services
2
700 - The arts; fine & decorative arts
2
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
340 - Law
1
370 - Education
1
380 - Commerce, communications & transportation
1
400 - Language
1
410 - Linguistics
1
576 - Genetics & evolution
1