Classification
500 - Natural sciences & mathematics
610 - Medicine & health
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
26
600 - Technology
19
333 - Economics of land & energy
17
140 - Specific philosophical schools
12
363 - Other social problems & services
12
380 - Commerce, communications & transportation
12
620 - Engineering & allied operations
11
576 - Genetics & evolution
10
580 - Plants (Botany)
8
612 - Human physiology
8
900 - History & geography
8
330 - Economics
7
540 - Chemistry & allied sciences
6
551 - Geology, hydrology & meteorology
6
615 - Pharmacology & therapeutics
6
300 - Social sciences
4
414 - Phonology & phonetics
4
630 - Agriculture & related technologies
4
658 - General management
4
370 - Education
3
581 - Specific topics in natural history
3
800 - Literature & rhetoric
3
100 - Philosophy & psychology
2
320 - Political science
2
361 - Social problems & social welfare in general
2
410 - Linguistics
2
304 - Factors affecting social behavior
1
340 - Law
1
400 - Language
1
530 - Physics
1