Classification
320 - Political science
551 - Geology, hydrology & meteorology
600 - Technology
330 - Economics
12
363 - Other social problems & services
12
333 - Economics of land & energy
10
620 - Engineering & allied operations
8
700 - The arts; fine & decorative arts
6
380 - Commerce, communications & transportation
5
610 - Medicine & health
5
900 - History & geography
5
000 - Computer science, information & general works
4
580 - Plants (Botany)
4
370 - Education
3
140 - Specific philosophical schools
2
630 - Agriculture & related technologies
2
658 - General management
2
720 - Architecture
2
100 - Philosophy & psychology
1
304 - Factors affecting social behavior
1
336 - Public finance
1
340 - Law
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
581 - Specific topics in natural history
1
800 - Literature & rhetoric
1