Classification
140 - Specific philosophical schools
414 - Phonology & phonetics
700 - The arts; fine & decorative arts
21
610 - Medicine & health
18
000 - Computer science, information & general works
15
333 - Economics of land & energy
13
380 - Commerce, communications & transportation
11
363 - Other social problems & services
9
580 - Plants (Botany)
9
551 - Geology, hydrology & meteorology
8
620 - Engineering & allied operations
8
900 - History & geography
7
600 - Technology
6
612 - Human physiology
6
320 - Political science
5
540 - Chemistry & allied sciences
5
576 - Genetics & evolution
5
581 - Specific topics in natural history
5
400 - Language
4
100 - Philosophy & psychology
3
300 - Social sciences
3
301 - Sociology & anthropology
3
330 - Economics
3
500 - Natural sciences & mathematics
3
304 - Factors affecting social behavior
2
370 - Education
2
410 - Linguistics
2
615 - Pharmacology & therapeutics
2
770 - Photography, photographs & computer art
2
800 - Literature & rhetoric
2
170 - Ethics
1
340 - Law
1