Classification
330 - Economics
363 - Other social problems & services
610 - Medicine & health
658 - General management
333 - Economics of land & energy
12
000 - Computer science, information & general works
8
380 - Commerce, communications & transportation
8
600 - Technology
8
551 - Geology, hydrology & meteorology
7
700 - The arts; fine & decorative arts
7
140 - Specific philosophical schools
4
320 - Political science
4
580 - Plants (Botany)
4
620 - Engineering & allied operations
4
630 - Agriculture & related technologies
4
370 - Education
3
720 - Architecture
2
900 - History & geography
2
100 - Philosophy & psychology
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
361 - Social problems & social welfare in general
1
550 - Earth sciences
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
800 - Literature & rhetoric
1