Classification
100 - Philosophy & psychology
700 - The arts; fine & decorative arts
900 - History & geography
43
320 - Political science
32
340 - Law
21
300 - Social sciences
18
370 - Education
17
200 - Religion
14
170 - Ethics
9
330 - Economics
9
333 - Economics of land & energy
8
610 - Medicine & health
8
140 - Specific philosophical schools
7
120 - Epistemology, causation & humankind
5
410 - Linguistics
5
600 - Technology
5
301 - Sociology & anthropology
4
530 - Physics
4
720 - Architecture
4
780 - Music
4
296 - Judaism
3
363 - Other social problems & services
3
380 - Commerce, communications & transportation
3
400 - Language
3
297 - Islam, Babism & Bahai Faith
2
580 - Plants (Botany)
2
800 - Literature & rhetoric
2
304 - Factors affecting social behavior
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
620 - Engineering & allied operations
1
650 - Management & auxiliary services
1
657 - Accounting
1