Classification
000 - Computer science, information & general works
610 - Medicine & health
102
700 - The arts; fine & decorative arts
76
333 - Economics of land & energy
37
140 - Specific philosophical schools
33
580 - Plants (Botany)
27
380 - Commerce, communications & transportation
23
540 - Chemistry & allied sciences
22
600 - Technology
18
330 - Economics
14
370 - Education
14
620 - Engineering & allied operations
11
363 - Other social problems & services
10
576 - Genetics & evolution
8
612 - Human physiology
8
900 - History & geography
6
304 - Factors affecting social behavior
5
500 - Natural sciences & mathematics
5
414 - Phonology & phonetics
4
551 - Geology, hydrology & meteorology
4
581 - Specific topics in natural history
4
800 - Literature & rhetoric
4
170 - Ethics
3
530 - Physics
3
630 - Agriculture & related technologies
3
720 - Architecture
3
100 - Philosophy & psychology
2
300 - Social sciences
2
320 - Political science
2
615 - Pharmacology & therapeutics
2
658 - General management
2
200 - Religion
1
340 - Law
1
400 - Language
1