Classification
320 - Political science
330 - Economics
380 - Commerce, communications & transportation
600 - Technology
3
610 - Medicine & health
658 - General management
333 - Economics of land & energy
2
576 - Genetics & evolution
2
000 - Computer science, information & general works
1
363 - Other social problems & services
1
370 - Education
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
700 - The arts; fine & decorative arts
1