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