Classification
170 - Ethics
340 - Law
100 - Philosophy & psychology
40
140 - Specific philosophical schools
26
320 - Political science
22
610 - Medicine & health
22
700 - The arts; fine & decorative arts
15
200 - Religion
13
300 - Social sciences
13
900 - History & geography
12
330 - Economics
10
333 - Economics of land & energy
10
363 - Other social problems & services
9
600 - Technology
8
620 - Engineering & allied operations
8
370 - Education
7
380 - Commerce, communications & transportation
7
000 - Computer science, information & general works
6
576 - Genetics & evolution
6
580 - Plants (Botany)
5
800 - Literature & rhetoric
5
120 - Epistemology, causation & humankind
4
361 - Social problems & social welfare in general
4
400 - Language
4
530 - Physics
4
630 - Agriculture & related technologies
4
297 - Islam, Babism & Bahai Faith
3
301 - Sociology & anthropology
3
364 - Criminology
3
304 - Factors affecting social behavior
2
410 - Linguistics
2
500 - Natural sciences & mathematics
2
581 - Specific topics in natural history
2
658 - General management
2
720 - Architecture
2
398 - Folklore
1
551 - Geology, hydrology & meteorology
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1