Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
320 - Political science
333 - Economics of land & energy
700 - The arts; fine & decorative arts
6
600 - Technology
5
620 - Engineering & allied operations
5
330 - Economics
4
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
610 - Medicine & health
2
630 - Agriculture & related technologies
2
900 - History & geography
2
100 - Philosophy & psychology
1
300 - Social sciences
1
361 - Social problems & social welfare in general
1
370 - Education
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
657 - Accounting
1
658 - General management
1
720 - Architecture
1