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