Classification
320 - Political science
330 - Economics
2
380 - Commerce, communications & transportation
576 - Genetics & evolution
600 - Technology
610 - Medicine & health
2
658 - General management
333 - Economics of land & energy
1
363 - Other social problems & services
1
551 - Geology, hydrology & meteorology
1
700 - The arts; fine & decorative arts
1