Classification
320 - Political science
340 - Law
330 - Economics
113
100 - Philosophy & psychology
85
300 - Social sciences
85
900 - History & geography
76
140 - Specific philosophical schools
68
700 - The arts; fine & decorative arts
65
333 - Economics of land & energy
52
363 - Other social problems & services
46
380 - Commerce, communications & transportation
34
170 - Ethics
29
600 - Technology
29
000 - Computer science, information & general works
27
200 - Religion
27
370 - Education
25
301 - Sociology & anthropology
22
304 - Factors affecting social behavior
22
610 - Medicine & health
21
551 - Geology, hydrology & meteorology
17
361 - Social problems & social welfare in general
15
350 - Public administration & military science
13
620 - Engineering & allied operations
12
400 - Language
11
581 - Specific topics in natural history
11
800 - Literature & rhetoric
10
576 - Genetics & evolution
9
297 - Islam, Babism & Bahai Faith
8
658 - General management
8
720 - Architecture
7
336 - Public finance
6
410 - Linguistics
6
500 - Natural sciences & mathematics
6
630 - Agriculture & related technologies
6
120 - Epistemology, causation & humankind
5
364 - Criminology
5
580 - Plants (Botany)
5
530 - Physics
4
360 - Social problems & services; associations
3
791 - Public performances
3
657 - Accounting
2
160 - Logic
1
398 - Folklore
1
414 - Phonology & phonetics
1
770 - Photography, photographs & computer art
1
780 - Music
1