Classification
820 - English & Old English literatures
39
330 - Economics
27
900 - History & geography
20
370 - Education
18
700 - The arts; fine & decorative arts
17
380 - Commerce, communications & transportation
13
610 - Medicine & health
12
006 - Special computer methods
10
800 - Literature & rhetoric
10
320 - Political science
9
340 - Law
9
551 - Geology, hydrology & meteorology
9
305 - Social groups
8
300 - Social sciences
6
301 - Sociology & anthropology
6
658 - General management
6
004 - Data processing & computer science
5
100 - Philosophy & psychology
5
333 - Economics of land & energy
5
612 - Human physiology
5
140 - Specific philosophical schools
4
400 - Language
4
519 - Probabilities & applied mathematics
4
530 - Physics
4
616 - Diseases
4
780 - Music
4
821 - English poetry
4
005 - Computer programming, programs & data
3
304 - Factors affecting social behavior
3
306 - Culture & institutions
3
307 - Communities
3
363 - Other social problems & services
3
410 - Linguistics
3
510 - Mathematics
3
516 - Geometry
3
576 - Genetics & evolution
3
580 - Plants (Botany)
3
621 - Applied physics
3
001 - Knowledge
2
297 - Islam, Babism & Bahai Faith
2
327 - International relations
2
331 - Labor economics
2
337 - International economics
2
414 - Phonology & phonetics
2
500 - Natural sciences & mathematics
2
571 - Physiology & related subjects
2
572 - Biochemistry
2
577 - Ecology
2
600 - Technology
2
620 - Engineering & allied operations
2
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