Classification
170 - Ethics
340 - Law
700 - The arts; fine & decorative arts
320 - Political science
14
100 - Philosophy & psychology
13
140 - Specific philosophical schools
12
330 - Economics
9
200 - Religion
8
610 - Medicine & health
8
363 - Other social problems & services
7
600 - Technology
7
300 - Social sciences
6
900 - History & geography
6
333 - Economics of land & energy
5
580 - Plants (Botany)
5
620 - Engineering & allied operations
5
576 - Genetics & evolution
4
000 - Computer science, information & general works
3
120 - Epistemology, causation & humankind
3
380 - Commerce, communications & transportation
3
630 - Agriculture & related technologies
3
800 - Literature & rhetoric
3
297 - Islam, Babism & Bahai Faith
2
301 - Sociology & anthropology
2
361 - Social problems & social welfare in general
2
400 - Language
2
530 - Physics
2
581 - Specific topics in natural history
2
658 - General management
2
720 - Architecture
2
304 - Factors affecting social behavior
1
360 - Social problems & services; associations
1
364 - Criminology
1
370 - Education
1
398 - Folklore
1
410 - Linguistics
1
551 - Geology, hydrology & meteorology
1