Classification
306 - Culture & institutions
350
370 - Education
185
305 - Social groups
71
378 - Higher education
70
371 - Schools & their activities; special education
59
379 - Public policy issues in education
53
301 - Sociology & anthropology
42
304 - Factors affecting social behavior
36
300 - Social sciences
23
372 - Elementary education
22
418 - Standard usage & applied linguistics
19
361 - Social problems & social welfare in general
15
375 - Curricula
13
374 - Adult education
12
302 - Social interaction
11
320 - Political science
9
510 - Mathematics
8
507 - Education, research & related topics
7
700 - The arts; fine & decorative arts
7
303 - Social processes
4
333 - Economics of land & energy
4
155 - Differential & developmental psychology
3
307 - Communities
3
551 - Geology, hydrology & meteorology
3
613 - Personal health & safety
3
658 - General management
3
107 - Education, research & related topics
2
150 - Psychology
2
200 - Religion
2
297 - Islam, Babism & Bahai Faith
2
327 - International relations
2
520 - Astronomy & allied sciences
2
607 - Education, research & related topics
2
120 - Epistemology, causation & humankind
1
142 - Critical philosophy
1
153 - Mental processes & intelligence
1
158 - Applied psychology
1
170 - Ethics
1
174 - Occupational ethics
1
323 - Civil & political rights
1
330 - Economics
1
331 - Labor economics
1
341 - Law of nations
1
362 - Social welfare problems & services
1
364 - Criminology
1
401 - Philosophy & theory
1
407 - Education, research & related topics
1
490 - Other languages
1
519 - Probabilities & applied mathematics
1
523 - Specific celestial bodies & phenomena
1
more ...