Classification
140 - Specific philosophical schools
363 - Other social problems & services
610 - Medicine & health
700 - The arts; fine & decorative arts
66
333 - Economics of land & energy
49
000 - Computer science, information & general works
45
330 - Economics
43
380 - Commerce, communications & transportation
36
600 - Technology
32
580 - Plants (Botany)
30
620 - Engineering & allied operations
24
551 - Geology, hydrology & meteorology
22
900 - History & geography
21
320 - Political science
18
304 - Factors affecting social behavior
16
370 - Education
16
576 - Genetics & evolution
14
540 - Chemistry & allied sciences
13
581 - Specific topics in natural history
12
630 - Agriculture & related technologies
12
300 - Social sciences
10
800 - Literature & rhetoric
10
658 - General management
9
340 - Law
8
720 - Architecture
8
500 - Natural sciences & mathematics
7
612 - Human physiology
7
170 - Ethics
5
414 - Phonology & phonetics
5
100 - Philosophy & psychology
4
200 - Religion
4
301 - Sociology & anthropology
4
400 - Language
4
615 - Pharmacology & therapeutics
4
297 - Islam, Babism & Bahai Faith
2
361 - Social problems & social welfare in general
2
410 - Linguistics
2
530 - Physics
2
780 - Music
2
350 - Public administration & military science
1
360 - Social problems & services; associations
1
550 - Earth sciences
1
657 - Accounting
1