Classification
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150 - Psychology
13
371 - Schools & their activities; special education
13
511 - General principles of mathematics
13
512 - Algebra
13
624 - Civil engineering
13
794 - Indoor games of skill
13
303 - Social processes
12
515 - Analysis
12
660 - Chemical engineering
11
910 - Geography & travel
11
040 - [Unassigned]
10
152 - Perception, movement, emotions & drives
10
301 - Sociology & anthropology
10
690 - Buildings
10
809 - History, description & criticism
10
170 - Ethics
9
305 - Social groups
9
579 - Microorganisms, fungi & algae
9
700 - The arts; fine & decorative arts
9
025 - Library operations
8
062 - Organizations in British Isles; in England
8
307 - Communities
8
364 - Criminology
8
368 - Insurance
8
571 - Physiology & related subjects
8
628 - Sanitary & municipal engineering
8
770 - Photography, photographs & computer art
8
155 - Differential & developmental psychology
7
174 - Occupational ethics
7
362 - Social welfare problems & services
7
509 - Historical, geographic & persons treatment
7
516 - Geometry
7
630 - Agriculture & related technologies
7
659 - Advertising & public relations
7
808 - Rhetoric & collections of literature
7
535 - Light & infrared & ultraviolet phenomena
6
577 - Ecology
6
657 - Accounting
6
792 - Stage presentations
6
061 - Organizations in North America
5
339 - Macroeconomics & related topics
5
378 - Higher education
5
501 - Philosophy & theory
5
537 - Electricity & electronics
5
541 - Physical chemistry
5
601 - Philosophy & theory
5
612 - Human physiology
5
615 - Pharmacology & therapeutics
5
664 - Food technology
5
930 - History of ancient world to ca. 499
5
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