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