Classification
140 - Specific philosophical schools
330 - Economics
22
610 - Medicine & health
22
700 - The arts; fine & decorative arts
22
320 - Political science
10
600 - Technology
6
300 - Social sciences
5
551 - Geology, hydrology & meteorology
4
620 - Engineering & allied operations
4
900 - History & geography
4
000 - Computer science, information & general works
3
333 - Economics of land & energy
3
340 - Law
3
363 - Other social problems & services
3
370 - Education
3
380 - Commerce, communications & transportation
3
581 - Specific topics in natural history
3
100 - Philosophy & psychology
2
304 - Factors affecting social behavior
2
120 - Epistemology, causation & humankind
1
170 - Ethics
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
580 - Plants (Botany)
1
630 - Agriculture & related technologies
1
780 - Music
1
800 - Literature & rhetoric
1