Classification
330 - Economics
46
333 - Economics of land & energy
29
320 - Political science
25
363 - Other social problems & services
14
700 - The arts; fine & decorative arts
12
380 - Commerce, communications & transportation
11
610 - Medicine & health
11
630 - Agriculture & related technologies
9
304 - Factors affecting social behavior
8
340 - Law
8
900 - History & geography
8
000 - Computer science, information & general works
7
140 - Specific philosophical schools
7
370 - Education
7
300 - Social sciences
6
551 - Geology, hydrology & meteorology
6
600 - Technology
6
362 - Social welfare problems & services
5
301 - Sociology & anthropology
4
580 - Plants (Botany)
4
200 - Religion
3
307 - Communities
3
336 - Public finance
3
400 - Language
3
620 - Engineering & allied operations
3
658 - General management
3
100 - Philosophy & psychology
2
170 - Ethics
2
297 - Islam, Babism & Bahai Faith
2
338 - Production
2
361 - Social problems & social welfare in general
2
371 - Schools & their activities; special education
2
615 - Pharmacology & therapeutics
2
800 - Literature & rhetoric
2
820 - English & Old English literatures
2
004 - Data processing & computer science
1
120 - Epistemology, causation & humankind
1
248 - Christian experience, practice & life
1
305 - Social groups
1
306 - Culture & institutions
1
325 - International migration & colonization
1
332 - Financial economics
1
346 - Private law
1
368 - Insurance
1
373 - Secondary education
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
570 - Life sciences; biology
1
576 - Genetics & evolution
1
577 - Ecology
1
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