Classification
363 - Other social problems & services
580 - Plants (Botany)
600 - Technology
14
333 - Economics of land & energy
12
610 - Medicine & health
10
700 - The arts; fine & decorative arts
10
140 - Specific philosophical schools
9
620 - Engineering & allied operations
8
900 - History & geography
7
000 - Computer science, information & general works
5
330 - Economics
4
380 - Commerce, communications & transportation
4
414 - Phonology & phonetics
3
551 - Geology, hydrology & meteorology
3
576 - Genetics & evolution
3
304 - Factors affecting social behavior
2
630 - Agriculture & related technologies
2
340 - Law
1
500 - Natural sciences & mathematics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
581 - Specific topics in natural history
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
658 - General management
1
800 - Literature & rhetoric
1