Classification
320 - Political science
87
300 - Social sciences
39
303 - Social processes
25
700 - The arts; fine & decorative arts
25
900 - History & geography
23
363 - Other social problems & services
19
140 - Specific philosophical schools
17
330 - Economics
15
333 - Economics of land & energy
14
370 - Education
9
301 - Sociology & anthropology
8
100 - Philosophy & psychology
7
380 - Commerce, communications & transportation
7
000 - Computer science, information & general works
6
200 - Religion
6
304 - Factors affecting social behavior
6
576 - Genetics & evolution
6
600 - Technology
6
610 - Medicine & health
6
297 - Islam, Babism & Bahai Faith
5
340 - Law
5
361 - Social problems & social welfare in general
5
551 - Geology, hydrology & meteorology
5
322 - Relation of state to organized groups
4
360 - Social problems & services; associations
4
581 - Specific topics in natural history
4
306 - Culture & institutions
3
305 - Social groups
2
362 - Social welfare problems & services
2
400 - Language
2
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
2
658 - General management
2
780 - Music
2
800 - Literature & rhetoric
2
296 - Judaism
1
321 - Systems of governments & states
1
323 - Civil & political rights
1
331 - Labor economics
1
336 - Public finance
1
338 - Production
1
371 - Schools & their activities; special education
1
381 - Commerce
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
659 - Advertising & public relations
1
701 - Philosophy of fine & decorative arts
1
720 - Architecture
1
791 - Public performances
1