Classification
320 - Political science
363 - Other social problems & services
333 - Economics of land & energy
325
330 - Economics
269
700 - The arts; fine & decorative arts
133
600 - Technology
117
551 - Geology, hydrology & meteorology
108
610 - Medicine & health
92
380 - Commerce, communications & transportation
89
000 - Computer science, information & general works
88
140 - Specific philosophical schools
74
900 - History & geography
72
630 - Agriculture & related technologies
66
620 - Engineering & allied operations
58
581 - Specific topics in natural history
55
370 - Education
53
304 - Factors affecting social behavior
50
340 - Law
35
300 - Social sciences
34
100 - Philosophy & psychology
26
576 - Genetics & evolution
25
170 - Ethics
19
580 - Plants (Botany)
17
658 - General management
17
200 - Religion
15
720 - Architecture
15
800 - Literature & rhetoric
13
336 - Public finance
12
301 - Sociology & anthropology
10
500 - Natural sciences & mathematics
10
361 - Social problems & social welfare in general
7
297 - Islam, Babism & Bahai Faith
5
400 - Language
5
410 - Linguistics
5
414 - Phonology & phonetics
5
540 - Chemistry & allied sciences
5
657 - Accounting
5
791 - Public performances
4
350 - Public administration & military science
3
550 - Earth sciences
3
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