Classification
140 - Specific philosophical schools
610 - Medicine & health
620 - Engineering & allied operations
600 - Technology
9
363 - Other social problems & services
8
900 - History & geography
8
700 - The arts; fine & decorative arts
7
333 - Economics of land & energy
5
380 - Commerce, communications & transportation
5
330 - Economics
4
720 - Architecture
4
800 - Literature & rhetoric
4
300 - Social sciences
3
340 - Law
3
580 - Plants (Botany)
3
170 - Ethics
2
304 - Factors affecting social behavior
2
370 - Education
2
576 - Genetics & evolution
2
630 - Agriculture & related technologies
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
530 - Physics
1