Classification
320 - Political science
330 - Economics
333 - Economics of land & energy
2
600 - Technology
610 - Medicine & health
2
620 - Engineering & allied operations
2
900 - History & geography
000 - Computer science, information & general works
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
551 - Geology, hydrology & meteorology
1
700 - The arts; fine & decorative arts
1