Classification
100 - Philosophy & psychology
200 - Religion
610 - Medicine & health
170 - Ethics
8
333 - Economics of land & energy
7
900 - History & geography
6
320 - Political science
5
340 - Law
5
700 - The arts; fine & decorative arts
5
140 - Specific philosophical schools
4
300 - Social sciences
4
301 - Sociology & anthropology
4
000 - Computer science, information & general works
3
296 - Judaism
2
297 - Islam, Babism & Bahai Faith
2
330 - Economics
2
361 - Social problems & social welfare in general
2
363 - Other social problems & services
2
370 - Education
2
304 - Factors affecting social behavior
1
362 - Social welfare problems & services
1
380 - Commerce, communications & transportation
1
400 - Language
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
616 - Diseases
1