Classification
100 - Philosophy & psychology
170 - Ethics
320 - Political science
88
140 - Specific philosophical schools
61
330 - Economics
45
900 - History & geography
45
610 - Medicine & health
38
700 - The arts; fine & decorative arts
36
340 - Law
35
200 - Religion
33
300 - Social sciences
31
600 - Technology
27
333 - Economics of land & energy
21
120 - Epistemology, causation & humankind
19
363 - Other social problems & services
18
370 - Education
16
530 - Physics
14
800 - Literature & rhetoric
14
000 - Computer science, information & general works
11
301 - Sociology & anthropology
11
620 - Engineering & allied operations
11
380 - Commerce, communications & transportation
10
400 - Language
9
410 - Linguistics
8
500 - Natural sciences & mathematics
6
581 - Specific topics in natural history
6
304 - Factors affecting social behavior
5
551 - Geology, hydrology & meteorology
5
630 - Agriculture & related technologies
5
297 - Islam, Babism & Bahai Faith
4
361 - Social problems & social welfare in general
4
576 - Genetics & evolution
4
580 - Plants (Botany)
4
296 - Judaism
3
364 - Criminology
3
791 - Public performances
3
520 - Astronomy & allied sciences
2
615 - Pharmacology & therapeutics
2
160 - Logic
1
414 - Phonology & phonetics
1
590 - Animals (Zoology)
1
612 - Human physiology
1
658 - General management
1
720 - Architecture
1
770 - Photography, photographs & computer art
1
780 - Music
1