Classification
580 - Plants (Botany)
333 - Economics of land & energy
10
700 - The arts; fine & decorative arts
10
610 - Medicine & health
9
600 - Technology
7
620 - Engineering & allied operations
6
630 - Agriculture & related technologies
5
340 - Law
4
363 - Other social problems & services
4
900 - History & geography
4
000 - Computer science, information & general works
3
140 - Specific philosophical schools
3
170 - Ethics
3
380 - Commerce, communications & transportation
3
576 - Genetics & evolution
3
300 - Social sciences
2
320 - Political science
2
330 - Economics
2
370 - Education
2
581 - Specific topics in natural history
2
658 - General management
2
720 - Architecture
2
800 - Literature & rhetoric
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
304 - Factors affecting social behavior
1
336 - Public finance
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
780 - Music
1