Classification
581 - Specific topics in natural history
363 - Other social problems & services
6
140 - Specific philosophical schools
5
320 - Political science
4
330 - Economics
4
333 - Economics of land & energy
4
610 - Medicine & health
4
000 - Computer science, information & general works
3
551 - Geology, hydrology & meteorology
3
630 - Agriculture & related technologies
3
700 - The arts; fine & decorative arts
3
900 - History & geography
3
370 - Education
2
200 - Religion
1
304 - Factors affecting social behavior
1
380 - Commerce, communications & transportation
1
398 - Folklore
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
600 - Technology
1
657 - Accounting
1
800 - Literature & rhetoric
1