Classification
320 - Political science
330 - Economics
350 - Public administration & military science
300 - Social sciences
8
333 - Economics of land & energy
8
900 - History & geography
6
600 - Technology
4
100 - Philosophy & psychology
3
363 - Other social problems & services
3
380 - Commerce, communications & transportation
3
000 - Computer science, information & general works
2
340 - Law
2
361 - Social problems & social welfare in general
2
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
2
658 - General management
2
700 - The arts; fine & decorative arts
2
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
336 - Public finance
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
657 - Accounting
1