Classification
000 - Computer science, information & general works
23
100 - Philosophy & psychology
3
140 - Specific philosophical schools
9
304 - Factors affecting social behavior
2
320 - Political science
4
330 - Economics
4
333 - Economics of land & energy
15
361 - Social problems & social welfare in general
1
363 - Other social problems & services
13
370 - Education
4
380 - Commerce, communications & transportation
10
414 - Phonology & phonetics
2
500 - Natural sciences & mathematics
1
530 - Physics
1
540 - Chemistry & allied sciences
8
551 - Geology, hydrology & meteorology
2
576 - Genetics & evolution
2
580 - Plants (Botany)
18
581 - Specific topics in natural history
3
590 - Animals (Zoology)
1
600 - Technology
12
610 - Medicine & health
45
612 - Human physiology
8
615 - Pharmacology & therapeutics
2
620 - Engineering & allied operations
9
630 - Agriculture & related technologies
3
658 - General management
1
700 - The arts; fine & decorative arts
720 - Architecture
1
800 - Literature & rhetoric
2
900 - History & geography
4