Classification
000 - Computer science, information & general works
610 - Medicine & health
25
333 - Economics of land & energy
10
140 - Specific philosophical schools
8
700 - The arts; fine & decorative arts
8
580 - Plants (Botany)
6
540 - Chemistry & allied sciences
5
380 - Commerce, communications & transportation
4
612 - Human physiology
4
370 - Education
3
615 - Pharmacology & therapeutics
3
363 - Other social problems & services
2
500 - Natural sciences & mathematics
2
576 - Genetics & evolution
2
100 - Philosophy & psychology
1
304 - Factors affecting social behavior
1
320 - Political science
1
330 - Economics
1
530 - Physics
1
581 - Specific topics in natural history
1
600 - Technology
1
630 - Agriculture & related technologies
1
900 - History & geography
1