Classification
301 - Sociology & anthropology
300 - Social sciences
71
170 - Ethics
47
320 - Political science
46
900 - History & geography
39
100 - Philosophy & psychology
33
140 - Specific philosophical schools
31
200 - Religion
25
610 - Medicine & health
22
330 - Economics
20
700 - The arts; fine & decorative arts
20
340 - Law
15
000 - Computer science, information & general works
14
363 - Other social problems & services
14
600 - Technology
14
333 - Economics of land & energy
13
304 - Factors affecting social behavior
11
370 - Education
11
380 - Commerce, communications & transportation
8
576 - Genetics & evolution
6
581 - Specific topics in natural history
6
620 - Engineering & allied operations
5
361 - Social problems & social welfare in general
4
297 - Islam, Babism & Bahai Faith
3
360 - Social problems & services; associations
3
364 - Criminology
3
630 - Agriculture & related technologies
3
780 - Music
3
400 - Language
2
500 - Natural sciences & mathematics
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
230 - Christianity & Christian theology
1
350 - Public administration & military science
1
410 - Linguistics
1
414 - Phonology & phonetics
1
520 - Astronomy & allied sciences
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
720 - Architecture
1
770 - Photography, photographs & computer art
1
800 - Literature & rhetoric
1