Classification
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579 - Microorganisms, fungi & algae
9
650 - Management & auxiliary services
9
062 - Organizations in British Isles; in England
8
158 - Applied psychology
8
571 - Physiology & related subjects
8
624 - Civil engineering
8
628 - Sanitary & municipal engineering
8
509 - Historical, geographic & persons treatment
7
516 - Geometry
7
153 - Mental processes & intelligence
6
364 - Criminology
6
577 - Ecology
6
690 - Buildings
6
700 - The arts; fine & decorative arts
6
792 - Stage presentations
6
025 - Library operations
5
061 - Organizations in North America
5
170 - Ethics
5
303 - Social processes
5
612 - Human physiology
5
152 - Perception, movement, emotions & drives
4
155 - Differential & developmental psychology
4
174 - Occupational ethics
4
343 - Military, tax, trade & industrial law
4
344 - Labor, social, education & cultural law
4
361 - Social problems & social welfare in general
4
368 - Insurance
4
378 - Higher education
4
501 - Philosophy & theory
4
535 - Light & infrared & ultraviolet phenomena
4
547 - Organic chemistry
4
550 - Earth sciences
4
560 - Paleontology; paleozoology
4
572 - Biochemistry
4
576 - Genetics & evolution
4
600 - Technology
4
615 - Pharmacology & therapeutics
4
618 - Gynecology, obstetrics, pediatrics & geriatrics
4
631 - Techniques, equipment & materials
4
636 - Animal husbandry
4
657 - Accounting
4
659 - Advertising & public relations
4
664 - Food technology
4
691 - Building materials
4
720 - Architecture
4
770 - Photography, photographs & computer art
4
794 - Indoor games of skill
4
930 - History of ancient world to ca. 499
4
940 - History of Europe
4
128 - Humankind
3
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