Classification
140 - Specific philosophical schools
363 - Other social problems & services
610 - Medicine & health
700 - The arts; fine & decorative arts
9
600 - Technology
6
380 - Commerce, communications & transportation
5
000 - Computer science, information & general works
4
320 - Political science
4
333 - Economics of land & energy
3
370 - Education
3
580 - Plants (Botany)
3
340 - Law
2
551 - Geology, hydrology & meteorology
2
620 - Engineering & allied operations
2
658 - General management
2
100 - Philosophy & psychology
1
170 - Ethics
1
200 - Religion
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
330 - Economics
1
350 - Public administration & military science
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
612 - Human physiology
1
630 - Agriculture & related technologies
1
900 - History & geography
1