Classification
330 - Economics
69
700 - The arts; fine & decorative arts
30
320 - Political science
28
000 - Computer science, information & general works
25
333 - Economics of land & energy
25
600 - Technology
23
900 - History & geography
23
340 - Law
18
620 - Engineering & allied operations
18
610 - Medicine & health
16
363 - Other social problems & services
15
380 - Commerce, communications & transportation
14
140 - Specific philosophical schools
11
551 - Geology, hydrology & meteorology
10
580 - Plants (Botany)
9
630 - Agriculture & related technologies
9
300 - Social sciences
7
370 - Education
6
500 - Natural sciences & mathematics
6
530 - Physics
5
576 - Genetics & evolution
5
100 - Philosophy & psychology
4
400 - Language
4
410 - Linguistics
4
414 - Phonology & phonetics
4
540 - Chemistry & allied sciences
3
658 - General management
3
820 - English & Old English literatures
3
301 - Sociology & anthropology
2
920 - Biography, genealogy & insignia
2
200 - Religion
1
304 - Factors affecting social behavior
1
581 - Specific topics in natural history
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1
770 - Photography, photographs & computer art
1
780 - Music
1
800 - Literature & rhetoric
1
970 - History of North America
1