Classification
306 - Culture & institutions
169
370 - Education
168
378 - Higher education
69
379 - Public policy issues in education
51
371 - Schools & their activities; special education
44
300 - Social sciences
31
305 - Social groups
31
301 - Sociology & anthropology
22
418 - Standard usage & applied linguistics
18
320 - Political science
17
372 - Elementary education
15
100 - Philosophy & psychology
13
304 - Factors affecting social behavior
13
333 - Economics of land & energy
13
375 - Curricula
13
374 - Adult education
11
700 - The arts; fine & decorative arts
11
510 - Mathematics
10
507 - Education, research & related topics
8
361 - Social problems & social welfare in general
7
140 - Specific philosophical schools
5
302 - Social interaction
4
303 - Social processes
4
155 - Differential & developmental psychology
3
307 - Communities
3
323 - Civil & political rights
3
551 - Geology, hydrology & meteorology
3
613 - Personal health & safety
3
658 - General management
3
900 - History & geography
3
107 - Education, research & related topics
2
200 - Religion
2
297 - Islam, Babism & Bahai Faith
2
327 - International relations
2
330 - Economics
2
363 - Other social problems & services
2
364 - Criminology
2
520 - Astronomy & allied sciences
2
607 - Education, research & related topics
2
120 - Epistemology, causation & humankind
1
142 - Critical philosophy
1
150 - Psychology
1
153 - Mental processes & intelligence
1
170 - Ethics
1
174 - Occupational ethics
1
331 - Labor economics
1
339 - Macroeconomics & related topics
1
341 - Law of nations
1
350 - Public administration & military science
1
398 - Folklore
1
more ...