Classification
000 - Computer science, information & general works
363 - Other social problems & services
540 - Chemistry & allied sciences
610 - Medicine & health
700 - The arts; fine & decorative arts
16
140 - Specific philosophical schools
9
333 - Economics of land & energy
9
414 - Phonology & phonetics
8
330 - Economics
6
380 - Commerce, communications & transportation
6
551 - Geology, hydrology & meteorology
6
576 - Genetics & evolution
6
580 - Plants (Botany)
6
581 - Specific topics in natural history
5
620 - Engineering & allied operations
5
500 - Natural sciences & mathematics
4
612 - Human physiology
4
300 - Social sciences
3
600 - Technology
3
630 - Agriculture & related technologies
3
100 - Philosophy & psychology
1
304 - Factors affecting social behavior
1
320 - Political science
1
370 - Education
1
800 - Literature & rhetoric
1
900 - History & geography
1