Classification
576 - Genetics & evolution
000 - Computer science, information & general works
33
610 - Medicine & health
28
700 - The arts; fine & decorative arts
27
600 - Technology
24
363 - Other social problems & services
21
500 - Natural sciences & mathematics
20
333 - Economics of land & energy
19
330 - Economics
16
580 - Plants (Botany)
14
630 - Agriculture & related technologies
14
140 - Specific philosophical schools
13
380 - Commerce, communications & transportation
13
620 - Engineering & allied operations
13
581 - Specific topics in natural history
11
658 - General management
10
551 - Geology, hydrology & meteorology
9
900 - History & geography
7
320 - Political science
6
300 - Social sciences
5
370 - Education
5
414 - Phonology & phonetics
5
540 - Chemistry & allied sciences
5
612 - Human physiology
5
800 - Literature & rhetoric
4
615 - Pharmacology & therapeutics
3
100 - Philosophy & psychology
2
301 - Sociology & anthropology
2
304 - Factors affecting social behavior
2
361 - Social problems & social welfare in general
2
410 - Linguistics
2
720 - Architecture
2
340 - Law
1
400 - Language
1
530 - Physics
1
590 - Animals (Zoology)
1
780 - Music
1