Classification
140 - Specific philosophical schools
300 - Social sciences
380 - Commerce, communications & transportation
700 - The arts; fine & decorative arts
16
333 - Economics of land & energy
7
610 - Medicine & health
7
000 - Computer science, information & general works
6
363 - Other social problems & services
6
620 - Engineering & allied operations
6
900 - History & geography
6
576 - Genetics & evolution
5
580 - Plants (Botany)
5
320 - Political science
4
500 - Natural sciences & mathematics
4
540 - Chemistry & allied sciences
4
600 - Technology
4
720 - Architecture
4
800 - Literature & rhetoric
4
100 - Philosophy & psychology
3
330 - Economics
3
340 - Law
3
370 - Education
3
400 - Language
3
414 - Phonology & phonetics
3
551 - Geology, hydrology & meteorology
3
581 - Specific topics in natural history
3
612 - Human physiology
3
170 - Ethics
2
301 - Sociology & anthropology
2
410 - Linguistics
2
630 - Agriculture & related technologies
2
304 - Factors affecting social behavior
1
530 - Physics
1
658 - General management
1