Classification
140 - Specific philosophical schools
320 - Political science
700 - The arts; fine & decorative arts
8
900 - History & geography
330 - Economics
4
333 - Economics of land & energy
4
370 - Education
3
000 - Computer science, information & general works
2
200 - Religion
2
400 - Language
2
410 - Linguistics
2
610 - Medicine & health
2
630 - Agriculture & related technologies
2
800 - Literature & rhetoric
2
100 - Philosophy & psychology
1
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
360 - Social problems & services; associations
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
414 - Phonology & phonetics
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
600 - Technology
1
620 - Engineering & allied operations
1
657 - Accounting
1
658 - General management
1
780 - Music
1