Classification
370 - Education
610 - Medicine & health
60
330 - Economics
47
700 - The arts; fine & decorative arts
47
320 - Political science
43
333 - Economics of land & energy
34
140 - Specific philosophical schools
27
100 - Philosophy & psychology
26
000 - Computer science, information & general works
24
363 - Other social problems & services
18
380 - Commerce, communications & transportation
18
900 - History & geography
18
600 - Technology
14
300 - Social sciences
13
400 - Language
12
200 - Religion
11
800 - Literature & rhetoric
10
580 - Plants (Botany)
8
361 - Social problems & social welfare in general
6
620 - Engineering & allied operations
6
780 - Music
6
170 - Ethics
5
304 - Factors affecting social behavior
5
340 - Law
4
410 - Linguistics
4
500 - Natural sciences & mathematics
4
301 - Sociology & anthropology
3
576 - Genetics & evolution
3
551 - Geology, hydrology & meteorology
2
581 - Specific topics in natural history
2
630 - Agriculture & related technologies
2
657 - Accounting
2
720 - Architecture
2
120 - Epistemology, causation & humankind
1
305 - Social groups
1
371 - Schools & their activities; special education
1
520 - Astronomy & allied sciences
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
658 - General management
1
770 - Photography, photographs & computer art
1