Classification
330 - Economics
320 - Political science
4
333 - Economics of land & energy
4
700 - The arts; fine & decorative arts
4
000 - Computer science, information & general works
2
600 - Technology
2
100 - Philosophy & psychology
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
576 - Genetics & evolution
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1