Classification
370 - Education
400
371 - Schools & their activities; special education
318
780 - Music
109
658 - General management
103
330 - Economics
94
340 - Law
74
745 - Decorative arts
61
500 - Natural sciences & mathematics
56
507 - Education, research & related topics
54
510 - Mathematics
53
300 - Social sciences
50
781 - General principles & musical forms
36
333 - Economics of land & energy
35
600 - Technology
32
100 - Philosophy & psychology
31
400 - Language
31
700 - The arts; fine & decorative arts
31
900 - History & geography
31
000 - Computer science, information & general works
30
320 - Political science
29
005 - Computer programming, programs & data
28
540 - Chemistry & allied sciences
23
363 - Other social problems & services
20
306 - Culture & institutions
19
374 - Adult education
19
620 - Engineering & allied operations
19
378 - Higher education
18
372 - Elementary education
17
410 - Linguistics
17
650 - Management & auxiliary services
17
418 - Standard usage & applied linguistics
16
140 - Specific philosophical schools
15
302 - Social interaction
15
331 - Labor economics
15
379 - Public policy issues in education
14
610 - Medicine & health
14
150 - Psychology
13
004 - Data processing & computer science
12
670 - Manufacturing
12
384 - Communications; telecommunication
11
519 - Probabilities & applied mathematics
11
380 - Commerce, communications & transportation
10
006 - Special computer methods
9
304 - Factors affecting social behavior
9
516 - Geometry
9
782 - Vocal music
9
800 - Literature & rhetoric
9
200 - Religion
8
381 - Commerce
8
630 - Agriculture & related technologies
7
more ...