Classification
363 - Other social problems & services
630 - Agriculture & related technologies
600 - Technology
7
700 - The arts; fine & decorative arts
6
330 - Economics
5
620 - Engineering & allied operations
5
333 - Economics of land & energy
4
581 - Specific topics in natural history
4
900 - History & geography
4
000 - Computer science, information & general works
3
140 - Specific philosophical schools
2
301 - Sociology & anthropology
2
320 - Political science
2
380 - Commerce, communications & transportation
2
551 - Geology, hydrology & meteorology
2
580 - Plants (Botany)
2
610 - Medicine & health
2
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
340 - Law
1
350 - Public administration & military science
1
576 - Genetics & evolution
1
612 - Human physiology
1
658 - General management
1
720 - Architecture
1