Classification
306 - Culture & institutions
394
370 - Education
263
300 - Social sciences
83
378 - Higher education
74
305 - Social groups
72
371 - Schools & their activities; special education
64
379 - Public policy issues in education
61
301 - Sociology & anthropology
52
304 - Factors affecting social behavior
44
100 - Philosophy & psychology
39
320 - Political science
33
372 - Elementary education
22
418 - Standard usage & applied linguistics
20
361 - Social problems & social welfare in general
18
374 - Adult education
15
700 - The arts; fine & decorative arts
15
333 - Economics of land & energy
13
375 - Curricula
13
302 - Social interaction
10
507 - Education, research & related topics
10
510 - Mathematics
10
140 - Specific philosophical schools
5
330 - Economics
5
900 - History & geography
5
200 - Religion
4
303 - Social processes
4
155 - Differential & developmental psychology
3
297 - Islam, Babism & Bahai Faith
3
307 - Communities
3
323 - Civil & political rights
3
364 - Criminology
3
551 - Geology, hydrology & meteorology
3
613 - Personal health & safety
3
658 - General management
3
107 - Education, research & related topics
2
150 - Psychology
2
327 - International relations
2
331 - Labor economics
2
363 - Other social problems & services
2
400 - Language
2
520 - Astronomy & allied sciences
2
607 - Education, research & related topics
2
800 - Literature & rhetoric
2
910 - Geography & travel
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
more ...