Classification
414 - Phonology & phonetics
580 - Plants (Botany)
700 - The arts; fine & decorative arts
15
600 - Technology
13
620 - Engineering & allied operations
11
000 - Computer science, information & general works
10
363 - Other social problems & services
8
610 - Medicine & health
7
333 - Economics of land & energy
6
900 - History & geography
5
140 - Specific philosophical schools
3
540 - Chemistry & allied sciences
3
576 - Genetics & evolution
3
304 - Factors affecting social behavior
2
630 - Agriculture & related technologies
2
330 - Economics
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
612 - Human physiology
1
720 - Architecture
1