Classification
600 - Technology
700 - The arts; fine & decorative arts
14
620 - Engineering & allied operations
11
000 - Computer science, information & general works
10
900 - History & geography
8
333 - Economics of land & energy
6
363 - Other social problems & services
5
610 - Medicine & health
5
100 - Philosophy & psychology
4
140 - Specific philosophical schools
4
380 - Commerce, communications & transportation
3
400 - Language
3
576 - Genetics & evolution
3
580 - Plants (Botany)
3
300 - Social sciences
2
720 - Architecture
2
301 - Sociology & anthropology
1
320 - Political science
1
370 - Education
1
540 - Chemistry & allied sciences
1
550 - Earth sciences
1
581 - Specific topics in natural history
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
780 - Music
1