Classification
320 - Political science
330 - Economics
600 - Technology
658 - General management
333 - Economics of land & energy
9
700 - The arts; fine & decorative arts
9
363 - Other social problems & services
7
380 - Commerce, communications & transportation
7
000 - Computer science, information & general works
6
370 - Education
5
620 - Engineering & allied operations
5
551 - Geology, hydrology & meteorology
4
610 - Medicine & health
4
900 - History & geography
4
576 - Genetics & evolution
3
580 - Plants (Botany)
3
800 - Literature & rhetoric
3
140 - Specific philosophical schools
2
581 - Specific topics in natural history
2
720 - Architecture
2
100 - Philosophy & psychology
1
300 - Social sciences
1
336 - Public finance
1
340 - Law
1
361 - Social problems & social welfare in general
1
400 - Language
1
780 - Music
1