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Pioneers of Evolution from Thales to Huxley
Edward Clodd
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North American Recent Soft-Shelled Turtles (Family Trionychidae)
Robert G. Webb
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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 Descent of Man and Selection in Relation to Sex, Vol. I
Charles Darwin
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Parasites: A Treatise on the Entozoa of Man and Animals
T. Spencer Cobbold
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Ways of Nature
John Burroughs
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The History of Creation, Vol. 1 (of 2)
Ernst Haeckel
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A Guide to the Study of Fishes, Volume 2 (of 2)
David Starr Jordan
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The Evolution Theory, Vol. 1 of 2
August Weismann
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Evidence as to Man's Place in Nature
Thomas Henry Huxley
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The puzzle of life and how it has been put together : A short history of the formation of the earth, with its vegetable and animal life, from the earliest times, including an account of prehistoric man, his weapons, tools, and works
Arthur Nicols
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Versuche über Pflanzenhybriden (German)
Gregor Mendel
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More Letters of Charles Darwin — Volume 2
Charles Darwin
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The Elements of Botany, For Beginners and For Schools
Asa Gray
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The Variation of Animals and Plants Under Domestication, Vol. I.
Charles Darwin
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On the Origin of Species by Means of Natural Selection
Charles Darwin
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More Letters of Charles Darwin — Volume 1
Charles Darwin
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Animals of the Past
Frederic A. Lucas
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Sex-linked Inheritance in Drosophila
Thomas Hunt Morgan and Calvin B. Bridges
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Birds in Town & Village
W. H. Hudson
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Birds of the Indian Hills
Douglas Dewar
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The Power of Movement in Plants
Charles Darwin and Sir Francis Darwin
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The Cambridge natural history, Vol. 03 (of 10)
A. H. Cooke and F. R. C. Reed
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Species Plantarum, Sections I-III (Latin)
Carl von Linné
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First Principles
Herbert Spencer
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