Classification
140 - Specific philosophical schools
170 - Ethics
100 - Philosophy & psychology
31
320 - Political science
19
200 - Religion
14
340 - Law
14
700 - The arts; fine & decorative arts
14
900 - History & geography
14
333 - Economics of land & energy
13
120 - Epistemology, causation & humankind
11
300 - Social sciences
11
370 - Education
10
610 - Medicine & health
9
330 - Economics
8
363 - Other social problems & services
8
600 - Technology
8
000 - Computer science, information & general works
6
380 - Commerce, communications & transportation
6
581 - Specific topics in natural history
5
301 - Sociology & anthropology
4
400 - Language
4
530 - Physics
4
576 - Genetics & evolution
4
304 - Factors affecting social behavior
3
361 - Social problems & social welfare in general
3
551 - Geology, hydrology & meteorology
3
580 - Plants (Botany)
3
630 - Agriculture & related technologies
3
800 - Literature & rhetoric
3
500 - Natural sciences & mathematics
2
620 - Engineering & allied operations
2
658 - General management
2
720 - Architecture
2
160 - Logic
1
297 - Islam, Babism & Bahai Faith
1
410 - Linguistics
1