Classification
320 - Political science
370 - Education
300 - Social sciences
5
500 - Natural sciences & mathematics
5
333 - Economics of land & energy
3
100 - Philosophy & psychology
2
140 - Specific philosophical schools
2
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
400 - Language
2
900 - History & geography
2
000 - Computer science, information & general works
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
330 - Economics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
600 - Technology
1
620 - Engineering & allied operations
1
658 - General management
1
700 - The arts; fine & decorative arts
1