Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
320 - Political science
551 - Geology, hydrology & meteorology
330 - Economics
13
700 - The arts; fine & decorative arts
10
363 - Other social problems & services
9
333 - Economics of land & energy
8
380 - Commerce, communications & transportation
5
581 - Specific topics in natural history
4
600 - Technology
4
414 - Phonology & phonetics
3
610 - Medicine & health
3
370 - Education
2
540 - Chemistry & allied sciences
2
630 - Agriculture & related technologies
2
900 - History & geography
2
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
340 - Law
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
720 - Architecture
1
800 - Literature & rhetoric
1