Classification
380 - Commerce, communications & transportation
330 - Economics
32
333 - Economics of land & energy
26
700 - The arts; fine & decorative arts
17
363 - Other social problems & services
14
610 - Medicine & health
12
000 - Computer science, information & general works
11
600 - Technology
11
320 - Political science
10
140 - Specific philosophical schools
7
340 - Law
5
370 - Education
5
900 - History & geography
5
361 - Social problems & social welfare in general
4
658 - General management
4
410 - Linguistics
3
551 - Geology, hydrology & meteorology
3
612 - Human physiology
3
800 - Literature & rhetoric
3
100 - Philosophy & psychology
2
336 - Public finance
2
400 - Language
2
500 - Natural sciences & mathematics
2
530 - Physics
2
576 - Genetics & evolution
2
581 - Specific topics in natural history
2
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
2
657 - Accounting
2
160 - Logic
1
200 - Religion
1
304 - Factors affecting social behavior
1
580 - Plants (Botany)
1
720 - Architecture
1
770 - Photography, photographs & computer art
1