Classification
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158 - Applied psychology
4
400 - Language
4
571 - Physiology & related subjects
4
572 - Biochemistry
4
003 - Systems
3
303 - Social processes
3
304 - Factors affecting social behavior
3
351 - Public administration
3
532 - Fluid mechanics; liquid mechanics
3
539 - Modern physics
3
770 - Photography, photographs & computer art
3
790 - Recreational & performing arts
3
800 - Literature & rhetoric
3
120 - Epistemology, causation & humankind
2
170 - Ethics
2
361 - Social problems & social welfare in general
2
364 - Criminology
2
371 - Schools & their activities; special education
2
410 - Linguistics
2
536 - Heat
2
547 - Organic chemistry
2
624 - Civil engineering
2
664 - Food technology
2
741 - Drawing & drawings
2
781 - General principles & musical forms
2
808 - Rhetoric & collections of literature
2
025 - Library operations
1
028 - Reading & use of other information media
1
200 - Religion
1
327 - International relations
1
344 - Labor, social, education & cultural law
1
347 - Civil procedure & courts
1
355 - Military science
1
362 - Social welfare problems & services
1
368 - Insurance
1
401 - Philosophy & theory
1
501 - Philosophy & theory
1
508 - Natural history
1
509 - Historical, geographic & persons treatment
1
534 - Sound & related vibrations
1
535 - Light & infrared & ultraviolet phenomena
1
537 - Electricity & electronics
1
541 - Physical chemistry
1
550 - Earth sciences
1
570 - Life sciences; biology
1
604 - Special topics
1
622 - Mining & related operations
1
628 - Sanitary & municipal engineering
1
650 - Management & auxiliary services
1
652 - Processes of written communication
1
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