Classification
100 - Philosophy & psychology
410 - Linguistics
900 - History & geography
7
400 - Language
5
700 - The arts; fine & decorative arts
5
300 - Social sciences
4
800 - Literature & rhetoric
4
140 - Specific philosophical schools
3
200 - Religion
3
320 - Political science
3
330 - Economics
3
000 - Computer science, information & general works
2
301 - Sociology & anthropology
2
333 - Economics of land & energy
2
780 - Music
2
120 - Epistemology, causation & humankind
1
297 - Islam, Babism & Bahai Faith
1
363 - Other social problems & services
1
530 - Physics
1
576 - Genetics & evolution
1
600 - Technology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
720 - Architecture
1
770 - Photography, photographs & computer art
1