Classification
363 - Other social problems & services
610 - Medicine & health
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
33
580 - Plants (Botany)
16
333 - Economics of land & energy
14
600 - Technology
13
620 - Engineering & allied operations
13
380 - Commerce, communications & transportation
12
630 - Agriculture & related technologies
12
551 - Geology, hydrology & meteorology
10
140 - Specific philosophical schools
9
330 - Economics
8
581 - Specific topics in natural history
8
540 - Chemistry & allied sciences
7
414 - Phonology & phonetics
6
576 - Genetics & evolution
5
612 - Human physiology
5
300 - Social sciences
3
304 - Factors affecting social behavior
3
500 - Natural sciences & mathematics
3
658 - General management
3
800 - Literature & rhetoric
3
100 - Philosophy & psychology
2
320 - Political science
2
170 - Ethics
1
340 - Law
1
370 - Education
1
720 - Architecture
1
900 - History & geography
1