Classification
170 - Ethics
320 - Political science
340 - Law
100 - Philosophy & psychology
23
300 - Social sciences
13
330 - Economics
13
140 - Specific philosophical schools
11
200 - Religion
10
700 - The arts; fine & decorative arts
10
900 - History & geography
6
000 - Computer science, information & general works
3
301 - Sociology & anthropology
3
333 - Economics of land & energy
3
363 - Other social problems & services
3
380 - Commerce, communications & transportation
3
600 - Technology
3
120 - Epistemology, causation & humankind
2
400 - Language
2
581 - Specific topics in natural history
2
160 - Logic
1
241 - Christian ethics
1
304 - Factors affecting social behavior
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
370 - Education
1
410 - Linguistics
1
530 - Physics
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
800 - Literature & rhetoric
1