Classification
140 - Specific philosophical schools
320 - Political science
330 - Economics
333 - Economics of land & energy
380 - Commerce, communications & transportation
363 - Other social problems & services
8
700 - The arts; fine & decorative arts
8
000 - Computer science, information & general works
6
551 - Geology, hydrology & meteorology
4
600 - Technology
4
576 - Genetics & evolution
3
581 - Specific topics in natural history
3
304 - Factors affecting social behavior
2
370 - Education
2
414 - Phonology & phonetics
2
620 - Engineering & allied operations
2
658 - General management
2
900 - History & geography
2
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
336 - Public finance
1
361 - Social problems & social welfare in general
1
580 - Plants (Botany)
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1
657 - Accounting
1
720 - Architecture
1
800 - Literature & rhetoric
1