Classification
320 - Political science
330 - Economics
333 - Economics of land & energy
380 - Commerce, communications & transportation
4
551 - Geology, hydrology & meteorology
600 - Technology
900 - History & geography
610 - Medicine & health
3
700 - The arts; fine & decorative arts
3
000 - Computer science, information & general works
2
363 - Other social problems & services
2
370 - Education
2
620 - Engineering & allied operations
2
720 - Architecture
2
340 - Law
1
580 - Plants (Botany)
1