Classification
000 - Computer science, information & general works
320 - Political science
363 - Other social problems & services
610 - Medicine & health
700 - The arts; fine & decorative arts
6
330 - Economics
5
600 - Technology
4
140 - Specific philosophical schools
3
333 - Economics of land & energy
3
551 - Geology, hydrology & meteorology
3
630 - Agriculture & related technologies
3
340 - Law
2
380 - Commerce, communications & transportation
2
581 - Specific topics in natural history
2
100 - Philosophy & psychology
1
300 - Social sciences
1
550 - Earth sciences
1
580 - Plants (Botany)
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
620 - Engineering & allied operations
1
658 - General management
1
720 - Architecture
1
900 - History & geography
1