Classification
304 - Factors affecting social behavior
610 - Medicine & health
99
330 - Economics
53
320 - Political science
26
333 - Economics of land & energy
25
370 - Education
21
363 - Other social problems & services
14
700 - The arts; fine & decorative arts
12
140 - Specific philosophical schools
11
800 - Literature & rhetoric
9
900 - History & geography
9
300 - Social sciences
6
380 - Commerce, communications & transportation
6
600 - Technology
6
301 - Sociology & anthropology
4
340 - Law
4
630 - Agriculture & related technologies
4
780 - Music
4
000 - Computer science, information & general works
3
400 - Language
3
414 - Phonology & phonetics
3
100 - Philosophy & psychology
2
200 - Religion
2
551 - Geology, hydrology & meteorology
2
576 - Genetics & evolution
2
297 - Islam, Babism & Bahai Faith
1
361 - Social problems & social welfare in general
1
410 - Linguistics
1
580 - Plants (Botany)
1
615 - Pharmacology & therapeutics
1
620 - Engineering & allied operations
1