=Biographies - See Biography --subdivision Biography under names of countries, cities, etc., names of corporate bodies, uniform titles of sacred works, and under classes of persons, ethnic groups, individual and groups of animals, and historic events
=Biological evolution - See Evolution (Biology) --subdivision Evolution under individual animals and groups of animals and under individual organs and regions of the body, e.g. Cattle--Evolution; Fishes--Evolution; Heart--Evolution
=Biology Ecology - See Ecology --subdivision Environmental aspects under subjects, e.g. Agricultural chemicals--Environmental aspects; Nuclear power plants--Environmental aspects; and headings beginning with the word Ecological
Biomechanics -- See Also the narrower term Animal mechanics --subdivisions Mechanical properties and Movements under individual organs and regions of the body, e.g. Heart--Mechanical properties; Foot--Movements
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Biomedical engineering -- See Also the narrower term Medical instruments and apparatus --individual instruments and apparatus, e.g. Hypodermic needles, Tilt table
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=Bionomics - See Ecology --subdivision Environmental aspects under subjects, e.g. Agricultural chemicals--Environmental aspects; Nuclear power plants--Environmental aspects; and headings beginning with the word Ecological
