Classification
361 - Social problems & social welfare in general
363 - Other social problems & services
380 - Commerce, communications & transportation
000 - Computer science, information & general works
3
140 - Specific philosophical schools
3
320 - Political science
3
600 - Technology
3
700 - The arts; fine & decorative arts
3
200 - Religion
2
330 - Economics
2
333 - Economics of land & energy
2
581 - Specific topics in natural history
2
610 - Medicine & health
2
658 - General management
2
301 - Sociology & anthropology
1
336 - Public finance
1
400 - Language
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
612 - Human physiology
1
800 - Literature & rhetoric
1
900 - History & geography
1