Classification
320 - Political science
143
330 - Economics
30
340 - Law
30
900 - History & geography
26
700 - The arts; fine & decorative arts
20
300 - Social sciences
15
333 - Economics of land & energy
15
350 - Public administration & military science
13
100 - Philosophy & psychology
11
380 - Commerce, communications & transportation
6
140 - Specific philosophical schools
5
363 - Other social problems & services
5
576 - Genetics & evolution
4
610 - Medicine & health
4
361 - Social problems & social welfare in general
3
600 - Technology
3
000 - Computer science, information & general works
2
170 - Ethics
2
301 - Sociology & anthropology
2
370 - Education
2
400 - Language
2
800 - Literature & rhetoric
2
296 - Judaism
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
351 - Public administration
1
364 - Criminology
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
581 - Specific topics in natural history
1
620 - Engineering & allied operations
1
720 - Architecture
1