Classification
320 - Political science
330 - Economics
531
340 - Law
291
900 - History & geography
208
300 - Social sciences
157
333 - Economics of land & energy
141
700 - The arts; fine & decorative arts
109
140 - Specific philosophical schools
101
380 - Commerce, communications & transportation
80
100 - Philosophy & psychology
76
363 - Other social problems & services
65
000 - Computer science, information & general works
56
304 - Factors affecting social behavior
56
370 - Education
48
600 - Technology
45
200 - Religion
42
800 - Literature & rhetoric
34
301 - Sociology & anthropology
30
610 - Medicine & health
30
551 - Geology, hydrology & meteorology
29
576 - Genetics & evolution
23
170 - Ethics
19
297 - Islam, Babism & Bahai Faith
18
400 - Language
18
620 - Engineering & allied operations
17
361 - Social problems & social welfare in general
15
581 - Specific topics in natural history
14
350 - Public administration & military science
13
410 - Linguistics
13
336 - Public finance
12
780 - Music
10
630 - Agriculture & related technologies
9
360 - Social problems & services; associations
7
364 - Criminology
6
658 - General management
6
720 - Architecture
6
120 - Epistemology, causation & humankind
5
323 - Civil & political rights
5
657 - Accounting
4
500 - Natural sciences & mathematics
3
770 - Photography, photographs & computer art
3
414 - Phonology & phonetics
2
530 - Physics
2
540 - Chemistry & allied sciences
2
791 - Public performances
2
347 - Civil procedure & courts
1
520 - Astronomy & allied sciences
1
580 - Plants (Botany)
1
615 - Pharmacology & therapeutics
1
940 - History of Europe
1