Classification
140 - Specific philosophical schools
620 - Engineering & allied operations
252
600 - Technology
188
900 - History & geography
146
700 - The arts; fine & decorative arts
141
333 - Economics of land & energy
84
363 - Other social problems & services
82
610 - Medicine & health
74
000 - Computer science, information & general works
70
380 - Commerce, communications & transportation
63
330 - Economics
54
720 - Architecture
40
580 - Plants (Botany)
34
630 - Agriculture & related technologies
29
320 - Political science
27
500 - Natural sciences & mathematics
23
551 - Geology, hydrology & meteorology
22
576 - Genetics & evolution
21
400 - Language
20
340 - Law
19
540 - Chemistry & allied sciences
19
370 - Education
18
300 - Social sciences
17
581 - Specific topics in natural history
14
100 - Philosophy & psychology
12
170 - Ethics
12
658 - General management
12
800 - Literature & rhetoric
11
414 - Phonology & phonetics
9
304 - Factors affecting social behavior
8
612 - Human physiology
7
590 - Animals (Zoology)
6
301 - Sociology & anthropology
5
361 - Social problems & social welfare in general
5
410 - Linguistics
5
530 - Physics
4
780 - Music
4
200 - Religion
3
297 - Islam, Babism & Bahai Faith
2
615 - Pharmacology & therapeutics
2
657 - Accounting
1