Classification
305 - Social groups
326
306 - Culture & institutions
172
301 - Sociology & anthropology
115
304 - Factors affecting social behavior
97
320 - Political science
70
300 - Social sciences
64
361 - Social problems & social welfare in general
63
307 - Communities
34
338 - Production
24
302 - Social interaction
12
333 - Economics of land & energy
11
364 - Criminology
10
370 - Education
10
327 - International relations
7
330 - Economics
7
155 - Differential & developmental psychology
6
303 - Social processes
6
614 - Incidence & prevention of disease
6
613 - Personal health & safety
5
345 - Criminal law
4
610 - Medicine & health
4
150 - Psychology
3
331 - Labor economics
3
340 - Law
3
363 - Other social problems & services
3
372 - Elementary education
3
379 - Public policy issues in education
3
551 - Geology, hydrology & meteorology
3
700 - The arts; fine & decorative arts
3
174 - Occupational ethics
2
339 - Macroeconomics & related topics
2
341 - Law of nations
2
378 - Higher education
2
571 - Physiology & related subjects
2
577 - Ecology
2
630 - Agriculture & related technologies
2
770 - Photography, photographs & computer art
2
005 - Computer programming, programs & data
1
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
297 - Islam, Babism & Bahai Faith
1
323 - Civil & political rights
1
324 - The political process
1
342 - Constitutional & administrative law
1
344 - Labor, social, education & cultural law
1
350 - Public administration & military science
1
362 - Social welfare problems & services
1
371 - Schools & their activities; special education
1
374 - Adult education
1
380 - Commerce, communications & transportation
1
more ...