Classification
200 - Religion
301 - Sociology & anthropology
900 - History & geography
100 - Philosophy & psychology
5
140 - Specific philosophical schools
4
160 - Logic
3
233 - Humankind
2
530 - Physics
2
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
170 - Ethics
1
300 - Social sciences
1
320 - Political science
1
330 - Economics
1
363 - Other social problems & services
1
370 - Education
1
581 - Specific topics in natural history
1
600 - Technology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
800 - Literature & rhetoric
1