Classification
610 - Medicine & health
59
100 - Philosophy & psychology
13
333 - Economics of land & energy
6
900 - History & geography
5
700 - The arts; fine & decorative arts
3
361 - Social problems & social welfare in general
2
000 - Computer science, information & general works
1
200 - Religion
1
304 - Factors affecting social behavior
1
320 - Political science
1
340 - Law
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
576 - Genetics & evolution
1
600 - Technology
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1