Classification
000 - Computer science, information & general works
330 - Economics
370 - Education
600 - Technology
333 - Economics of land & energy
13
380 - Commerce, communications & transportation
13
700 - The arts; fine & decorative arts
12
320 - Political science
11
363 - Other social problems & services
10
610 - Medicine & health
8
620 - Engineering & allied operations
8
900 - History & geography
7
140 - Specific philosophical schools
5
300 - Social sciences
4
340 - Law
4
630 - Agriculture & related technologies
4
170 - Ethics
3
304 - Factors affecting social behavior
3
400 - Language
3
551 - Geology, hydrology & meteorology
3
576 - Genetics & evolution
3
581 - Specific topics in natural history
3
657 - Accounting
3
658 - General management
3
720 - Architecture
3
100 - Philosophy & psychology
2
200 - Religion
2
410 - Linguistics
2
500 - Natural sciences & mathematics
2
580 - Plants (Botany)
2
780 - Music
2
160 - Logic
1
336 - Public finance
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
530 - Physics
1