Classification
140 - Specific philosophical schools
610 - Medicine & health
81
333 - Economics of land & energy
59
340 - Law
59
363 - Other social problems & services
59
700 - The arts; fine & decorative arts
58
320 - Political science
48
000 - Computer science, information & general works
44
330 - Economics
42
380 - Commerce, communications & transportation
30
600 - Technology
27
551 - Geology, hydrology & meteorology
25
900 - History & geography
25
580 - Plants (Botany)
21
370 - Education
19
170 - Ethics
18
300 - Social sciences
18
581 - Specific topics in natural history
17
304 - Factors affecting social behavior
14
620 - Engineering & allied operations
14
100 - Philosophy & psychology
10
361 - Social problems & social welfare in general
9
658 - General management
9
301 - Sociology & anthropology
8
500 - Natural sciences & mathematics
8
540 - Chemistry & allied sciences
8
576 - Genetics & evolution
8
612 - Human physiology
8
630 - Agriculture & related technologies
8
800 - Literature & rhetoric
7
414 - Phonology & phonetics
6
400 - Language
5
200 - Religion
4
360 - Social problems & services; associations
3
364 - Criminology
3
410 - Linguistics
3
530 - Physics
3
350 - Public administration & military science
2
615 - Pharmacology & therapeutics
2
297 - Islam, Babism & Bahai Faith
1
336 - Public finance
1
344 - Labor, social, education & cultural law
1
346 - Private law
1
657 - Accounting
1
720 - Architecture
1
780 - Music
1