Classification
370 - Education
231
300 - Social sciences
53
100 - Philosophy & psychology
50
700 - The arts; fine & decorative arts
34
320 - Political science
21
371 - Schools & their activities; special education
21
301 - Sociology & anthropology
20
378 - Higher education
17
304 - Factors affecting social behavior
16
900 - History & geography
12
372 - Elementary education
11
306 - Culture & institutions
9
333 - Economics of land & energy
9
374 - Adult education
9
400 - Language
8
200 - Religion
7
600 - Technology
7
800 - Literature & rhetoric
7
500 - Natural sciences & mathematics
6
507 - Education, research & related topics
6
000 - Computer science, information & general works
5
305 - Social groups
5
510 - Mathematics
5
610 - Medicine & health
5
170 - Ethics
4
297 - Islam, Babism & Bahai Faith
4
340 - Law
4
363 - Other social problems & services
4
540 - Chemistry & allied sciences
4
780 - Music
4
006 - Special computer methods
3
120 - Epistemology, causation & humankind
3
140 - Specific philosophical schools
3
302 - Social interaction
3
330 - Economics
3
379 - Public policy issues in education
3
380 - Commerce, communications & transportation
3
410 - Linguistics
3
418 - Standard usage & applied linguistics
3
530 - Physics
3
791 - Public performances
3
001 - Knowledge
2
150 - Psychology
2
361 - Social problems & social welfare in general
2
519 - Probabilities & applied mathematics
2
551 - Geology, hydrology & meteorology
2
620 - Engineering & allied operations
2
660 - Chemical engineering
2
303 - Social processes
1
338 - Production
1
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