Classification
170 - Ethics
100 - Philosophy & psychology
71
320 - Political science
39
200 - Religion
27
900 - History & geography
27
300 - Social sciences
21
700 - The arts; fine & decorative arts
21
140 - Specific philosophical schools
15
330 - Economics
15
340 - Law
11
600 - Technology
11
610 - Medicine & health
11
120 - Epistemology, causation & humankind
10
333 - Economics of land & energy
9
363 - Other social problems & services
8
370 - Education
8
658 - General management
6
301 - Sociology & anthropology
5
400 - Language
5
620 - Engineering & allied operations
5
800 - Literature & rhetoric
5
000 - Computer science, information & general works
4
297 - Islam, Babism & Bahai Faith
4
304 - Factors affecting social behavior
4
500 - Natural sciences & mathematics
4
576 - Genetics & evolution
4
380 - Commerce, communications & transportation
3
530 - Physics
3
581 - Specific topics in natural history
3
160 - Logic
2
174 - Occupational ethics
2
551 - Geology, hydrology & meteorology
2
630 - Agriculture & related technologies
2
296 - Judaism
1
302 - Social interaction
1
303 - Social processes
1
331 - Labor economics
1
361 - Social problems & social welfare in general
1
410 - Linguistics
1
540 - Chemistry & allied sciences
1
580 - Plants (Botany)
1
650 - Management & auxiliary services
1