Classification
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577 - Ecology
5
612 - Human physiology
5
792 - Stage presentations
5
025 - Library operations
4
155 - Differential & developmental psychology
4
170 - Ethics
4
343 - Military, tax, trade & industrial law
4
361 - Social problems & social welfare in general
4
364 - Criminology
4
378 - Higher education
4
381 - Commerce
4
501 - Philosophy & theory
4
547 - Organic chemistry
4
550 - Earth sciences
4
560 - Paleontology; paleozoology
4
572 - Biochemistry
4
615 - Pharmacology & therapeutics
4
618 - Gynecology, obstetrics, pediatrics & geriatrics
4
631 - Techniques, equipment & materials
4
636 - Animal husbandry
4
659 - Advertising & public relations
4
664 - Food technology
4
691 - Building materials
4
930 - History of ancient world to ca. 499
4
940 - History of Europe
4
174 - Occupational ethics
3
307 - Communities
3
336 - Public finance
3
341 - Law of nations
3
401 - Philosophy & theory
3
418 - Standard usage & applied linguistics
3
531 - Classical mechanics; solid mechanics
3
535 - Light & infrared & ultraviolet phenomena
3
541 - Physical chemistry
3
630 - Agriculture & related technologies
3
641 - Food & drink
3
650 - Management & auxiliary services
3
657 - Accounting
3
696 - Utilities
3
720 - Architecture
3
796 - Athletic & outdoor sports & games
3
030 - General encyclopedic works
2
057 - Serials in Slavic languages
2
065 - Organizations in Italy & adjacent islands
2
128 - Humankind
2
153 - Mental processes & intelligence
2
297 - Islam, Babism & Bahai Faith
2
300 - Social sciences
2
303 - Social processes
2
339 - Macroeconomics & related topics
2
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