Classification
100 - Philosophy & psychology
300 - Social sciences
320 - Political science
576 - Genetics & evolution
900 - History & geography
330 - Economics
4
301 - Sociology & anthropology
3
140 - Specific philosophical schools
2
200 - Religion
2
333 - Economics of land & energy
2
363 - Other social problems & services
2
581 - Specific topics in natural history
2
600 - Technology
2
000 - Computer science, information & general works
1
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
340 - Law
1
350 - Public administration & military science
1
370 - Education
1
400 - Language
1
410 - Linguistics
1
610 - Medicine & health
1
620 - Engineering & allied operations
1