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