Classification
000 - Computer science, information & general works
330 - Economics
363 - Other social problems & services
600 - Technology
658 - General management
700 - The arts; fine & decorative arts
333 - Economics of land & energy
5
620 - Engineering & allied operations
4
140 - Specific philosophical schools
3
320 - Political science
2
576 - Genetics & evolution
2
610 - Medicine & health
2
630 - Agriculture & related technologies
2
900 - History & geography
2
100 - Philosophy & psychology
1
200 - Religion
1
300 - Social sciences
1
380 - Commerce, communications & transportation
1
551 - Geology, hydrology & meteorology
1
720 - Architecture
1