Classification
170 - Ethics
700 - The arts; fine & decorative arts
800 - Literature & rhetoric
900 - History & geography
8
100 - Philosophy & psychology
4
140 - Specific philosophical schools
4
200 - Religion
4
320 - Political science
4
363 - Other social problems & services
4
300 - Social sciences
3
340 - Law
3
600 - Technology
3
610 - Medicine & health
3
630 - Agriculture & related technologies
3
333 - Economics of land & energy
2
370 - Education
2
380 - Commerce, communications & transportation
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
620 - Engineering & allied operations
2
720 - Architecture
2
000 - Computer science, information & general works
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
330 - Economics
1
780 - Music
1