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Animal coloration; an account of the principal facts and theories relating to the colours and markings of animals (1892)
Beddard, Frank E. (Frank Evers), 1858-1925 · London, S. Sonnenschein & co.; New York, Macmillan & co. · leaf 6

Color of animals
Internet Archive · Biodiversity Heritage Library · Public Domain Mark 1.0. Free to use for anything.
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