Classification
620 - Engineering & allied operations
355
700 - The arts; fine & decorative arts
354
600 - Technology
307
333 - Economics of land & energy
251
610 - Medicine & health
204
530 - Physics
187
540 - Chemistry & allied sciences
187
000 - Computer science, information & general works
183
538 - Magnetism
180
900 - History & geography
177
363 - Other social problems & services
72
580 - Plants (Botany)
66
140 - Specific philosophical schools
62
380 - Commerce, communications & transportation
60
330 - Economics
58
500 - Natural sciences & mathematics
55
621 - Applied physics
52
576 - Genetics & evolution
37
547 - Organic chemistry
35
130 - Parapsychology & occultism
32
537 - Electricity & electronics
32
612 - Human physiology
28
414 - Phonology & phonetics
27
616 - Diseases
27
546 - Inorganic chemistry
26
541 - Physical chemistry
25
340 - Law
21
543 - Analytical chemistry
18
304 - Factors affecting social behavior
15
539 - Modern physics
15
615 - Pharmacology & therapeutics
15
720 - Architecture
15
523 - Specific celestial bodies & phenomena
14
551 - Geology, hydrology & meteorology
14
570 - Life sciences; biology
12
800 - Literature & rhetoric
12
320 - Political science
10
572 - Biochemistry
10
574 - [Unassigned]
10
658 - General management
10
668 - Technology of other organic products
10
520 - Astronomy & allied sciences
9
581 - Specific topics in natural history
9
370 - Education
8
550 - Earth sciences
7
630 - Agriculture & related technologies
7
660 - Chemical engineering
7
781 - General principles & musical forms
7
535 - Light & infrared & ultraviolet phenomena
6
400 - Language
5
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