Classification
610 - Medicine & health
155
370 - Education
117
700 - The arts; fine & decorative arts
101
333 - Economics of land & energy
70
000 - Computer science, information & general works
63
140 - Specific philosophical schools
56
600 - Technology
47
363 - Other social problems & services
43
380 - Commerce, communications & transportation
37
330 - Economics
34
580 - Plants (Botany)
27
100 - Philosophy & psychology
26
320 - Political science
26
900 - History & geography
24
800 - Literature & rhetoric
20
300 - Social sciences
15
620 - Engineering & allied operations
15
304 - Factors affecting social behavior
14
400 - Language
14
170 - Ethics
10
576 - Genetics & evolution
10
581 - Specific topics in natural history
9
340 - Law
8
361 - Social problems & social welfare in general
8
410 - Linguistics
8
540 - Chemistry & allied sciences
8
612 - Human physiology
8
500 - Natural sciences & mathematics
7
658 - General management
7
780 - Music
7
200 - Religion
6
414 - Phonology & phonetics
6
615 - Pharmacology & therapeutics
5
301 - Sociology & anthropology
4
551 - Geology, hydrology & meteorology
4
297 - Islam, Babism & Bahai Faith
2
360 - Social problems & services; associations
2
630 - Agriculture & related technologies
2
160 - Logic
1
350 - Public administration & military science
1
530 - Physics
1
657 - Accounting
1
720 - Architecture
1