Browsing by Author "Thayer, Abbott Handerson, 1849-1921."
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Item Concealing coloration : an answer to Theodore Roosevelt. Bulletin of the AMNH ; v. 31, article 23.(New York : Published by order of the Trustees, American Museum of Natural History, 1912) Thayer, Abbott Handerson, 1849-1921.; Roosevelt, Theodore, 1858-1919. Revealing and concealing coloration in birds and mammals.