Classification
140 - Specific philosophical schools
330 - Economics
610 - Medicine & health
700 - The arts; fine & decorative arts
56
363 - Other social problems & services
40
333 - Economics of land & energy
36
000 - Computer science, information & general works
33
600 - Technology
29
380 - Commerce, communications & transportation
25
320 - Political science
19
630 - Agriculture & related technologies
14
370 - Education
13
551 - Geology, hydrology & meteorology
13
620 - Engineering & allied operations
13
580 - Plants (Botany)
12
900 - History & geography
12
658 - General management
10
304 - Factors affecting social behavior
9
300 - Social sciences
8
581 - Specific topics in natural history
8
340 - Law
7
500 - Natural sciences & mathematics
7
800 - Literature & rhetoric
6
100 - Philosophy & psychology
5
170 - Ethics
4
301 - Sociology & anthropology
4
361 - Social problems & social welfare in general
4
540 - Chemistry & allied sciences
4
576 - Genetics & evolution
4
720 - Architecture
4
200 - Religion
3
400 - Language
3
350 - Public administration & military science
2
360 - Social problems & services; associations
2
550 - Earth sciences
2
612 - Human physiology
2
657 - Accounting
2
297 - Islam, Babism & Bahai Faith
1
338 - Production
1
410 - Linguistics
1
414 - Phonology & phonetics
1
615 - Pharmacology & therapeutics
1
780 - Music
1