Classification
330 - Economics
380 - Commerce, communications & transportation
4
610 - Medicine & health
620 - Engineering & allied operations
800 - Literature & rhetoric
333 - Economics of land & energy
3
363 - Other social problems & services
3
600 - Technology
3
700 - The arts; fine & decorative arts
3
900 - History & geography
3
140 - Specific philosophical schools
2
370 - Education
2
720 - Architecture
2
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
301 - Sociology & anthropology
1
340 - Law
1
576 - Genetics & evolution
1
658 - General management
1