Classification
320 - Political science
340 - Law
700 - The arts; fine & decorative arts
900 - History & geography
330 - Economics
10
363 - Other social problems & services
9
140 - Specific philosophical schools
8
333 - Economics of land & energy
7
600 - Technology
6
100 - Philosophy & psychology
5
620 - Engineering & allied operations
5
300 - Social sciences
4
380 - Commerce, communications & transportation
4
576 - Genetics & evolution
4
720 - Architecture
4
301 - Sociology & anthropology
3
370 - Education
3
500 - Natural sciences & mathematics
3
297 - Islam, Babism & Bahai Faith
2
400 - Language
2
658 - General management
2
800 - Literature & rhetoric
2
000 - Computer science, information & general works
1
170 - Ethics
1
200 - Religion
1
304 - Factors affecting social behavior
1
361 - Social problems & social welfare in general
1
410 - Linguistics
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
770 - Photography, photographs & computer art
1
780 - Music
1
791 - Public performances
1
940 - History of Europe
1