Classification
363 - Other social problems & services
540 - Chemistry & allied sciences
600 - Technology
83
700 - The arts; fine & decorative arts
75
620 - Engineering & allied operations
73
000 - Computer science, information & general works
72
333 - Economics of land & energy
49
610 - Medicine & health
45
330 - Economics
33
580 - Plants (Botany)
23
900 - History & geography
22
581 - Specific topics in natural history
18
140 - Specific philosophical schools
17
414 - Phonology & phonetics
15
630 - Agriculture & related technologies
14
576 - Genetics & evolution
13
380 - Commerce, communications & transportation
12
500 - Natural sciences & mathematics
12
551 - Geology, hydrology & meteorology
12
304 - Factors affecting social behavior
7
320 - Political science
7
612 - Human physiology
7
300 - Social sciences
6
340 - Law
6
370 - Education
5
530 - Physics
5
100 - Philosophy & psychology
2
301 - Sociology & anthropology
2
615 - Pharmacology & therapeutics
2
658 - General management
2
800 - Literature & rhetoric
2
400 - Language
1
520 - Astronomy & allied sciences
1
720 - Architecture
1