Classification
320 - Political science
330 - Economics
1,000
300 - Social sciences
162
900 - History & geography
129
333 - Economics of land & energy
87
340 - Law
50
630 - Agriculture & related technologies
49
363 - Other social problems & services
37
370 - Education
37
610 - Medicine & health
37
700 - The arts; fine & decorative arts
34
600 - Technology
28
000 - Computer science, information & general works
23
380 - Commerce, communications & transportation
21
140 - Specific philosophical schools
18
304 - Factors affecting social behavior
17
620 - Engineering & allied operations
13
100 - Philosophy & psychology
11
200 - Religion
9
361 - Social problems & social welfare in general
8
301 - Sociology & anthropology
7
551 - Geology, hydrology & meteorology
7
400 - Language
6
500 - Natural sciences & mathematics
6
170 - Ethics
5
550 - Earth sciences
5
350 - Public administration & military science
4
530 - Physics
4
576 - Genetics & evolution
4
780 - Music
4
336 - Public finance
3
410 - Linguistics
3
160 - Logic
2
657 - Accounting
2
658 - General management
2
360 - Social problems & services; associations
1
364 - Criminology
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
580 - Plants (Botany)
1
615 - Pharmacology & therapeutics
1
800 - Literature & rhetoric
1