Classification
370 - Education
224
379 - Public policy issues in education
209
378 - Higher education
142
371 - Schools & their activities; special education
105
306 - Culture & institutions
92
320 - Political science
39
418 - Standard usage & applied linguistics
28
372 - Elementary education
22
374 - Adult education
15
304 - Factors affecting social behavior
14
361 - Social problems & social welfare in general
14
375 - Curricula
13
300 - Social sciences
12
507 - Education, research & related topics
12
305 - Social groups
11
338 - Production
11
510 - Mathematics
10
658 - General management
10
155 - Differential & developmental psychology
8
616 - Diseases
8
301 - Sociology & anthropology
6
302 - Social interaction
4
303 - Social processes
4
333 - Economics of land & energy
4
404 - Special topics
4
107 - Education, research & related topics
3
551 - Geology, hydrology & meteorology
3
610 - Medicine & health
3
613 - Personal health & safety
3
700 - The arts; fine & decorative arts
3
003 - Systems
2
150 - Psychology
2
174 - Occupational ethics
2
307 - Communities
2
331 - Labor economics
2
351 - Public administration
2
363 - Other social problems & services
2
410 - Linguistics
2
570 - Life sciences; biology
2
614 - Incidence & prevention of disease
2
628 - Sanitary & municipal engineering
2
910 - Geography & travel
2
004 - Data processing & computer science
1
005 - Computer programming, programs & data
1
006 - Special computer methods
1
170 - Ethics
1
200 - Religion
1
323 - Civil & political rights
1
325 - International migration & colonization
1
327 - International relations
1
more ...