Classification
306 - Culture & institutions
42
305 - Social groups
41
320 - Political science
36
304 - Factors affecting social behavior
30
361 - Social problems & social welfare in general
21
300 - Social sciences
19
301 - Sociology & anthropology
15
307 - Communities
13
330 - Economics
13
338 - Production
11
333 - Economics of land & energy
10
370 - Education
9
140 - Specific philosophical schools
7
610 - Medicine & health
7
900 - History & geography
6
302 - Social interaction
5
327 - International relations
5
363 - Other social problems & services
5
380 - Commerce, communications & transportation
5
700 - The arts; fine & decorative arts
5
100 - Philosophy & psychology
3
155 - Differential & developmental psychology
3
303 - Social processes
3
340 - Law
3
364 - Criminology
3
551 - Geology, hydrology & meteorology
3
600 - Technology
3
614 - Incidence & prevention of disease
3
000 - Computer science, information & general works
2
170 - Ethics
2
331 - Labor economics
2
339 - Macroeconomics & related topics
2
345 - Criminal law
2
360 - Social problems & services; associations
2
613 - Personal health & safety
2
800 - Literature & rhetoric
2
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
323 - Civil & political rights
1
350 - Public administration & military science
1
379 - Public policy issues in education
1
418 - Standard usage & applied linguistics
1
496 - African languages
1
500 - Natural sciences & mathematics
1
580 - Plants (Botany)
1
612 - Human physiology
1
618 - Gynecology, obstetrics, pediatrics & geriatrics
1
770 - Photography, photographs & computer art
1
791 - Public performances
1
947 - Eastern Europe; Russia
1
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