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