Classification
370 - Education
332
379 - Public policy issues in education
279
378 - Higher education
153
371 - Schools & their activities; special education
129
306 - Culture & institutions
89
320 - Political science
78
330 - Economics
39
418 - Standard usage & applied linguistics
30
372 - Elementary education
27
374 - Adult education
21
900 - History & geography
20
300 - Social sciences
19
338 - Production
18
304 - Factors affecting social behavior
14
361 - Social problems & social welfare in general
14
375 - Curricula
13
510 - Mathematics
13
507 - Education, research & related topics
12
658 - General management
10
301 - Sociology & anthropology
9
340 - Law
9
305 - Social groups
8
616 - Diseases
8
610 - Medicine & health
7
155 - Differential & developmental psychology
6
303 - Social processes
5
700 - The arts; fine & decorative arts
5
302 - Social interaction
4
333 - Economics of land & energy
4
350 - Public administration & military science
4
355 - Military science
4
404 - Special topics
4
613 - Personal health & safety
4
323 - Civil & political rights
3
331 - Labor economics
3
363 - Other social problems & services
3
001 - Knowledge
2
100 - Philosophy & psychology
2
150 - Psychology
2
174 - Occupational ethics
2
200 - Religion
2
307 - Communities
2
351 - Public administration
2
358 - Air & other specialized forces
2
410 - Linguistics
2
500 - Natural sciences & mathematics
2
551 - Geology, hydrology & meteorology
2
570 - Life sciences; biology
2
614 - Incidence & prevention of disease
2
628 - Sanitary & municipal engineering
2
more ...