Classification
170 - Ethics
610 - Medicine & health
100 - Philosophy & psychology
46
140 - Specific philosophical schools
33
600 - Technology
31
340 - Law
30
330 - Economics
24
700 - The arts; fine & decorative arts
23
300 - Social sciences
21
320 - Political science
19
363 - Other social problems & services
18
900 - History & geography
17
000 - Computer science, information & general works
16
333 - Economics of land & energy
16
370 - Education
15
580 - Plants (Botany)
14
200 - Religion
13
380 - Commerce, communications & transportation
13
620 - Engineering & allied operations
12
658 - General management
7
361 - Social problems & social welfare in general
6
301 - Sociology & anthropology
5
630 - Agriculture & related technologies
5
304 - Factors affecting social behavior
4
530 - Physics
4
720 - Architecture
4
551 - Geology, hydrology & meteorology
3
576 - Genetics & evolution
3
615 - Pharmacology & therapeutics
3
800 - Literature & rhetoric
3
410 - Linguistics
2
500 - Natural sciences & mathematics
2
581 - Specific topics in natural history
2
612 - Human physiology
2
616 - Diseases
2
001 - Knowledge
1
120 - Epistemology, causation & humankind
1
296 - Judaism
1
297 - Islam, Babism & Bahai Faith
1
350 - Public administration & military science
1
362 - Social welfare problems & services
1
364 - Criminology
1
398 - Folklore
1
400 - Language
1
590 - Animals (Zoology)
1
660 - Chemical engineering
1
770 - Photography, photographs & computer art
1
780 - Music
1
791 - Public performances
1