Classification
363 - Other social problems & services
414 - Phonology & phonetics
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
600 - Technology
21
333 - Economics of land & energy
12
630 - Agriculture & related technologies
12
580 - Plants (Botany)
10
610 - Medicine & health
8
000 - Computer science, information & general works
7
576 - Genetics & evolution
7
540 - Chemistry & allied sciences
6
551 - Geology, hydrology & meteorology
6
900 - History & geography
6
612 - Human physiology
4
140 - Specific philosophical schools
3
300 - Social sciences
3
380 - Commerce, communications & transportation
3
500 - Natural sciences & mathematics
3
581 - Specific topics in natural history
3
304 - Factors affecting social behavior
2
330 - Economics
2
530 - Physics
1
658 - General management
1
720 - Architecture
1
800 - Literature & rhetoric
1