Classification
370 - Education
228
378 - Higher education
32
371 - Schools & their activities; special education
20
374 - Adult education
19
621 - Applied physics
14
658 - General management
14
006 - Special computer methods
12
300 - Social sciences
10
330 - Economics
10
650 - Management & auxiliary services
10
306 - Culture & institutions
9
004 - Data processing & computer science
8
333 - Economics of land & energy
8
418 - Standard usage & applied linguistics
7
379 - Public policy issues in education
6
158 - Applied psychology
5
303 - Social processes
5
372 - Elementary education
5
610 - Medicine & health
5
620 - Engineering & allied operations
5
301 - Sociology & anthropology
4
340 - Law
4
361 - Social problems & social welfare in general
4
657 - Accounting
4
302 - Social interaction
3
331 - Labor economics
3
375 - Curricula
3
613 - Personal health & safety
3
614 - Incidence & prevention of disease
3
000 - Computer science, information & general works
2
003 - Systems
2
170 - Ethics
2
320 - Political science
2
363 - Other social problems & services
2
401 - Philosophy & theory
2
500 - Natural sciences & mathematics
2
510 - Mathematics
2
578 - Natural history of organisms
2
600 - Technology
2
607 - Education, research & related topics
2
615 - Pharmacology & therapeutics
2
624 - Civil engineering
2
700 - The arts; fine & decorative arts
2
900 - History & geography
2
001 - Knowledge
1
100 - Philosophy & psychology
1
150 - Psychology
1
160 - Logic
1
174 - Occupational ethics
1
304 - Factors affecting social behavior
1
more ...