Classification
330 - Economics
493
320 - Political science
81
900 - History & geography
68
333 - Economics of land & energy
63
370 - Education
46
700 - The arts; fine & decorative arts
44
340 - Law
33
363 - Other social problems & services
31
610 - Medicine & health
31
300 - Social sciences
29
140 - Specific philosophical schools
24
000 - Computer science, information & general works
22
380 - Commerce, communications & transportation
22
200 - Religion
18
600 - Technology
18
301 - Sociology & anthropology
16
820 - English & Old English literatures
16
100 - Philosophy & psychology
14
400 - Language
14
304 - Factors affecting social behavior
12
336 - Public finance
11
968 - Southern Africa; Republic of South Africa
11
576 - Genetics & evolution
9
630 - Agriculture & related technologies
9
551 - Geology, hydrology & meteorology
7
580 - Plants (Botany)
7
658 - General management
7
410 - Linguistics
6
170 - Ethics
5
297 - Islam, Babism & Bahai Faith
5
306 - Culture & institutions
5
342 - Constitutional & administrative law
5
500 - Natural sciences & mathematics
5
620 - Engineering & allied operations
5
780 - Music
5
800 - Literature & rhetoric
5
305 - Social groups
4
307 - Communities
4
378 - Higher education
4
414 - Phonology & phonetics
4
581 - Specific topics in natural history
4
720 - Architecture
4
910 - Geography & travel
4
120 - Epistemology, causation & humankind
3
338 - Production
3
362 - Social welfare problems & services
3
650 - Management & auxiliary services
3
158 - Applied psychology
2
302 - Social interaction
2
303 - Social processes
2
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