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