Classification
300 - Social sciences
3,781
301 - Sociology & anthropology
274
320 - Political science
198
306 - Culture & institutions
163
305 - Social groups
138
330 - Economics
105
363 - Other social problems & services
105
658 - General management
83
500 - Natural sciences & mathematics
81
302 - Social interaction
78
338 - Production
67
303 - Social processes
61
304 - Factors affecting social behavior
53
616 - Diseases
50
331 - Labor economics
41
150 - Psychology
37
333 - Economics of land & energy
37
361 - Social problems & social welfare in general
37
155 - Differential & developmental psychology
29
004 - Data processing & computer science
26
364 - Criminology
26
650 - Management & auxiliary services
24
577 - Ecology
23
621 - Applied physics
23
344 - Labor, social, education & cultural law
22
519 - Probabilities & applied mathematics
22
895 - Literatures of East & Southeast Asia
20
398 - Folklore
18
370 - Education
16
610 - Medicine & health
16
620 - Engineering & allied operations
16
005 - Computer programming, programs & data
14
170 - Ethics
14
613 - Personal health & safety
14
327 - International relations
13
614 - Incidence & prevention of disease
13
900 - History & geography
13
340 - Law
12
001 - Knowledge
11
070 - News media, journalism & publishing
11
153 - Mental processes & intelligence
11
910 - Geography & travel
11
158 - Applied psychology
10
337 - International economics
10
520 - Astronomy & allied sciences
10
979 - Great Basin & Pacific Slope region
10
400 - Language
9
307 - Communities
8
351 - Public administration
8
362 - Social welfare problems & services
8
more ...