Classification
320 - Political science
11
700 - The arts; fine & decorative arts
9
330 - Economics
8
333 - Economics of land & energy
6
363 - Other social problems & services
6
900 - History & geography
6
140 - Specific philosophical schools
5
300 - Social sciences
5
600 - Technology
5
000 - Computer science, information & general works
4
380 - Commerce, communications & transportation
4
551 - Geology, hydrology & meteorology
4
370 - Education
3
620 - Engineering & allied operations
3
800 - Literature & rhetoric
3
100 - Philosophy & psychology
2
340 - Law
2
170 - Ethics
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
390 - Customs, etiquette & folklore
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
657 - Accounting
1
658 - General management
1
720 - Architecture
1
920 - Biography, genealogy & insignia
1