Classification
140 - Specific philosophical schools
610 - Medicine & health
11
000 - Computer science, information & general works
8
370 - Education
7
320 - Political science
6
333 - Economics of land & energy
6
363 - Other social problems & services
6
380 - Commerce, communications & transportation
5
700 - The arts; fine & decorative arts
5
100 - Philosophy & psychology
4
330 - Economics
4
304 - Factors affecting social behavior
3
361 - Social problems & social welfare in general
3
900 - History & geography
3
300 - Social sciences
2
410 - Linguistics
2
551 - Geology, hydrology & meteorology
2
581 - Specific topics in natural history
2
800 - Literature & rhetoric
2
170 - Ethics
1
200 - Religion
1
340 - Law
1
414 - Phonology & phonetics
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1