Books in Biology (sorted by popularity)
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The Foundations of the Origin of Species Charles Darwin 168 downloads
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Lamarck, the Founder of Evolution: His Life and Work A. S. Packard 162 downloads
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The Human Side of Animals Royal Dixon 162 downloads
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Evolution in Modern Thought 154 downloads
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The Life-Story of Insects George H. Carpenter 148 downloads
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Darwin and Modern Science A. C. Seward 148 downloads
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Text Book of Biology, Part 1: Vertebrata H. G. Wells 121 downloads
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My Studio Neighbors W. Hamilton Gibson 118 downloads
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Contributions to the Theory of Natural Selection Alfred Russel Wallace 114 downloads
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Souvenirs entomologiques - Livre I (French) Jean-Henri Fabre 113 downloads
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Species and Varieties, Their Origin by Mutation Hugo de Vries 111 downloads
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De l'origine des espèces (French) Charles Darwin 111 downloads
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Darwin, and After Darwin, Volumes 1 and 3 George John Romanes 108 downloads
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Darwiniana; Essays and Reviews Pertaining to Darwinism Asa Gray 106 downloads
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The Story of the Living Machine H. W. Conn 100 downloads
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Facts and Arguments for Darwin Fritz Müller 96 downloads
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Ducks at a Distance: A Waterfowl Identification Guide Bob Hines 96 downloads
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Parasiten der Honigbiene (German) Eduard Philibert Assmuss 96 downloads
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The Evolution of Man Scientifically Disproved in 50 Arguments William A. Williams 92 downloads
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Essays on early ornithology and kindred subjects James Roxburgh McClymont 92 downloads
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Evolution, Old & New Samuel Butler 91 downloads
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Ohio Biological Survey, Bull. 10, Vol. 11, No. 6 Bruce Fink and Leafy Jane Corrington Hilker 90 downloads
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Nature Near London Richard Jefferies 90 downloads
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Nouveaux souvenirs entomologiques - Livre II (French) Jean-Henri Fabre 90 downloads
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A Theory of Creation: A Review of 'Vestiges of the Natural History of Creation' Francis Bowen 89 downloads