Classification
301 - Sociology & anthropology
530 - Physics
900 - History & geography
100 - Philosophy & psychology
6
300 - Social sciences
4
700 - The arts; fine & decorative arts
4
200 - Religion
3
140 - Specific philosophical schools
2
320 - Political science
2
330 - Economics
2
370 - Education
2
576 - Genetics & evolution
2
600 - Technology
2
000 - Computer science, information & general works
1
340 - Law
1
363 - Other social problems & services
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
620 - Engineering & allied operations
1