Classification
320 - Political science
363 - Other social problems & services
330 - Economics
190
333 - Economics of land & energy
169
700 - The arts; fine & decorative arts
133
551 - Geology, hydrology & meteorology
107
600 - Technology
102
000 - Computer science, information & general works
89
900 - History & geography
73
140 - Specific philosophical schools
72
380 - Commerce, communications & transportation
60
610 - Medicine & health
58
620 - Engineering & allied operations
58
581 - Specific topics in natural history
54
370 - Education
42
300 - Social sciences
41
340 - Law
38
630 - Agriculture & related technologies
38
100 - Philosophy & psychology
28
576 - Genetics & evolution
24
170 - Ethics
19
658 - General management
18
580 - Plants (Botany)
17
720 - Architecture
17
200 - Religion
15
304 - Factors affecting social behavior
15
800 - Literature & rhetoric
13
500 - Natural sciences & mathematics
11
301 - Sociology & anthropology
10
361 - Social problems & social welfare in general
7
657 - Accounting
6
297 - Islam, Babism & Bahai Faith
5
400 - Language
5
410 - Linguistics
5
414 - Phonology & phonetics
5
540 - Chemistry & allied sciences
5
350 - Public administration & military science
4
791 - Public performances
4
550 - Earth sciences
3
336 - Public finance
2
520 - Astronomy & allied sciences
2
530 - Physics
2
360 - Social problems & services; associations
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
650 - Management & auxiliary services
1
780 - Music
1