Classification
000 - Computer science, information & general works
297 - Islam, Babism & Bahai Faith
320 - Political science
4
330 - Economics
4
333 - Economics of land & energy
3
363 - Other social problems & services
3
551 - Geology, hydrology & meteorology
2
700 - The arts; fine & decorative arts
2
900 - History & geography
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
200 - Religion
1
350 - Public administration & military science
1
370 - Education
1
380 - Commerce, communications & transportation
1
400 - Language
1
576 - Genetics & evolution
1
600 - Technology
1
620 - Engineering & allied operations
1
720 - Architecture
1
800 - Literature & rhetoric
1