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The Minds and Manners of Wild Animals: A Book of Personal Observations
William T. Hornaday
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Journal of Researches into the Natural History and Geology of the Countries Visited During the Voyage Round the World of H.M.S. Beagle Under the Command of Captain Fitz Roy, R.N.
Charles Darwin
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The Descent of Man and Selection in Relation to Sex, Vol. I
Charles Darwin
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My Studio Neighbors
W. Hamilton Gibson
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North American Recent Soft-Shelled Turtles (Family Trionychidae)
Robert G. Webb
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The Variation of Animals and Plants Under Domestication, Vol. I.
Charles Darwin
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Form and Function: A Contribution to the History of Animal Morphology
E. S. Russell
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On the Origin of Species by Means of Natural Selection
Charles Darwin
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Metabolic Adaptation to Climate and Distribution of the Raccoon Procyon Lotor and Other Procyonidae
John N. Mugaas, John Seidensticker, and Kathleen P. Mahlke-Johnson
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Ways of Nature
John Burroughs
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More Letters of Charles Darwin — Volume 2
Charles Darwin
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Parasites: A Treatise on the Entozoa of Man and Animals
T. Spencer Cobbold
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The Power of Movement in Plants
Charles Darwin and Sir Francis Darwin
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The Variation of Animals and Plants under Domestication
Charles Darwin
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The Descent of Man and Selection in Relation to Sex, Vol. II (1st Edition)
Charles Darwin
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The Wonders of Instinct: Chapters in the Psychology of Insects
Jean-Henri Fabre
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A Guide to the Study of Fishes, Volume 2 (of 2)
David Starr Jordan
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Vertebrates from the Barrier Island of Tamaulipas, México
Richard F. Johnston, Robert K. Selander, B. J. Wilks, and Gerald G. Raun
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The Cambridge natural history, Vol. 03 (of 10)
A. H. Cooke and F. R. C. Reed
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The Antiquity of Man
Sir Charles Lyell
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Darwinism (1889)
Alfred Russel Wallace
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Sex-linked Inheritance in Drosophila
Thomas Hunt Morgan and Calvin B. Bridges
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The Life of Crustacea
W. T. Calman
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Darwin and Modern Science
A. C. Seward
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Versuche über Pflanzenhybriden (German)
Gregor Mendel
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