Classification
320 - Political science
900 - History & geography
10
370 - Education
8
700 - The arts; fine & decorative arts
4
170 - Ethics
3
300 - Social sciences
3
330 - Economics
3
333 - Economics of land & energy
3
363 - Other social problems & services
3
100 - Philosophy & psychology
2
200 - Religion
2
297 - Islam, Babism & Bahai Faith
2
400 - Language
2
800 - Literature & rhetoric
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
340 - Law
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
380 - Commerce, communications & transportation
1
410 - Linguistics
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
600 - Technology
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1
770 - Photography, photographs & computer art
1
780 - Music
1