Classification
330 - Economics
333 - Economics of land & energy
30
370 - Education
26
320 - Political science
25
700 - The arts; fine & decorative arts
25
600 - Technology
24
363 - Other social problems & services
23
610 - Medicine & health
16
000 - Computer science, information & general works
15
140 - Specific philosophical schools
14
900 - History & geography
14
380 - Commerce, communications & transportation
13
620 - Engineering & allied operations
13
100 - Philosophy & psychology
8
658 - General management
8
300 - Social sciences
7
551 - Geology, hydrology & meteorology
7
170 - Ethics
4
200 - Religion
4
304 - Factors affecting social behavior
4
400 - Language
4
576 - Genetics & evolution
4
581 - Specific topics in natural history
4
720 - Architecture
4
800 - Literature & rhetoric
4
630 - Agriculture & related technologies
3
780 - Music
3
297 - Islam, Babism & Bahai Faith
2
301 - Sociology & anthropology
2
302 - Social interaction
2
340 - Law
2
350 - Public administration & military science
2
360 - Social problems & services; associations
2
500 - Natural sciences & mathematics
2
540 - Chemistry & allied sciences
2
580 - Plants (Botany)
2
657 - Accounting
2
120 - Epistemology, causation & humankind
1
153 - Mental processes & intelligence
1
158 - Applied psychology
1
160 - Logic
1
248 - Christian experience, practice & life
1
303 - Social processes
1
305 - Social groups
1
361 - Social problems & social welfare in general
1
381 - Commerce
1
414 - Phonology & phonetics
1
530 - Physics
1
612 - Human physiology
1
650 - Management & auxiliary services
1
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