Classification
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
4
580 - Plants (Botany)
4
140 - Specific philosophical schools
3
551 - Geology, hydrology & meteorology
3
330 - Economics
2
333 - Economics of land & energy
2
363 - Other social problems & services
2
304 - Factors affecting social behavior
1
380 - Commerce, communications & transportation
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
600 - Technology
1