Classification
000 - Computer science, information & general works
800 - Literature & rhetoric
900 - History & geography
23
140 - Specific philosophical schools
10
330 - Economics
8
100 - Philosophy & psychology
7
410 - Linguistics
7
700 - The arts; fine & decorative arts
6
320 - Political science
5
363 - Other social problems & services
5
380 - Commerce, communications & transportation
5
400 - Language
5
120 - Epistemology, causation & humankind
4
200 - Religion
4
300 - Social sciences
4
333 - Economics of land & energy
3
581 - Specific topics in natural history
3
600 - Technology
3
170 - Ethics
2
301 - Sociology & anthropology
2
551 - Geology, hydrology & meteorology
2
576 - Genetics & evolution
2
780 - Music
2
297 - Islam, Babism & Bahai Faith
1
370 - Education
1
430 - Germanic languages; German
1
530 - Physics
1
590 - Animals (Zoology)
1
620 - Engineering & allied operations
1
720 - Architecture
1
791 - Public performances
1
809 - History, description & criticism
1