Classification
140 - Specific philosophical schools
363 - Other social problems & services
6
370 - Education
700 - The arts; fine & decorative arts
6
720 - Architecture
330 - Economics
4
380 - Commerce, communications & transportation
4
000 - Computer science, information & general works
3
333 - Economics of land & energy
3
600 - Technology
3
620 - Engineering & allied operations
3
900 - History & geography
3
320 - Political science
2
400 - Language
2
551 - Geology, hydrology & meteorology
2
610 - Medicine & health
2
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
301 - Sociology & anthropology
1
340 - Law
1
800 - Literature & rhetoric
1