Classification
300 - Social sciences
320 - Political science
100 - Philosophy & psychology
123
900 - History & geography
98
330 - Economics
90
340 - Law
64
301 - Sociology & anthropology
53
700 - The arts; fine & decorative arts
38
370 - Education
36
200 - Religion
32
140 - Specific philosophical schools
28
304 - Factors affecting social behavior
25
600 - Technology
25
170 - Ethics
18
000 - Computer science, information & general works
17
363 - Other social problems & services
15
380 - Commerce, communications & transportation
15
333 - Economics of land & energy
13
610 - Medicine & health
11
361 - Social problems & social welfare in general
10
400 - Language
9
720 - Architecture
8
780 - Music
8
800 - Literature & rhetoric
8
364 - Criminology
7
410 - Linguistics
7
620 - Engineering & allied operations
7
120 - Epistemology, causation & humankind
6
581 - Specific topics in natural history
5
350 - Public administration & military science
4
360 - Social problems & services; associations
4
500 - Natural sciences & mathematics
4
576 - Genetics & evolution
4
770 - Photography, photographs & computer art
4
297 - Islam, Babism & Bahai Faith
3
530 - Physics
3
160 - Logic
2
650 - Management & auxiliary services
2
791 - Public performances
2
321 - Systems of governments & states
1
551 - Geology, hydrology & meteorology
1
630 - Agriculture & related technologies
1
657 - Accounting
1
658 - General management
1
920 - Biography, genealogy & insignia
1