Classification
363 - Other social problems & services
540 - Chemistry & allied sciences
7
600 - Technology
6
700 - The arts; fine & decorative arts
6
620 - Engineering & allied operations
4
000 - Computer science, information & general works
3
628 - Sanitary & municipal engineering
3
630 - Agriculture & related technologies
3
330 - Economics
2
333 - Economics of land & energy
2
414 - Phonology & phonetics
2
580 - Plants (Botany)
2
581 - Specific topics in natural history
2
100 - Philosophy & psychology
1
304 - Factors affecting social behavior
1
320 - Political science
1
338 - Production
1
500 - Natural sciences & mathematics
1
530 - Physics
1
576 - Genetics & evolution
1
612 - Human physiology
1
658 - General management
1
720 - Architecture
1
900 - History & geography
1