Classification
140 - Specific philosophical schools
320 - Political science
700 - The arts; fine & decorative arts
17
333 - Economics of land & energy
14
363 - Other social problems & services
14
330 - Economics
12
000 - Computer science, information & general works
10
610 - Medicine & health
10
551 - Geology, hydrology & meteorology
9
380 - Commerce, communications & transportation
8
581 - Specific topics in natural history
8
600 - Technology
7
200 - Religion
6
304 - Factors affecting social behavior
5
361 - Social problems & social welfare in general
5
100 - Philosophy & psychology
4
170 - Ethics
4
300 - Social sciences
4
370 - Education
4
120 - Epistemology, causation & humankind
2
297 - Islam, Babism & Bahai Faith
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
630 - Agriculture & related technologies
2
800 - Literature & rhetoric
2
900 - History & geography
2
301 - Sociology & anthropology
1
340 - Law
1
410 - Linguistics
1
414 - Phonology & phonetics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
658 - General management
1
720 - Architecture
1