Classification
200 - Religion
320 - Political science
700 - The arts; fine & decorative arts
900 - History & geography
100 - Philosophy & psychology
5
000 - Computer science, information & general works
4
301 - Sociology & anthropology
4
140 - Specific philosophical schools
3
300 - Social sciences
3
363 - Other social problems & services
3
600 - Technology
3
330 - Economics
2
333 - Economics of land & energy
2
370 - Education
2
380 - Commerce, communications & transportation
2
576 - Genetics & evolution
2
120 - Epistemology, causation & humankind
1
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
340 - Law
1
361 - Social problems & social welfare in general
1
400 - Language
1
410 - Linguistics
1
520 - Astronomy & allied sciences
1
581 - Specific topics in natural history
1
630 - Agriculture & related technologies
1
800 - Literature & rhetoric
1