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Parasites: A Treatise on the Entozoa of Man and Animals
T. Spencer Cobbold
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Omphalos: An Attempt to Untie the Geological Knot
Philip Henry Gosse
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Versuche über Pflanzenhybriden (German)
Gregor Mendel
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The Variation of Animals and Plants Under Domestication, Vol. I.
Charles Darwin
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Animals of the Past
Frederic A. Lucas
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Darwin and Modern Science
A. C. Seward
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The Descent of Man and Selection in Relation to Sex, Vol. II (1st Edition)
Charles Darwin
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Pioneers of Evolution from Thales to Huxley
Edward Clodd
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The History of Creation, Vol. 1 (of 2)
Ernst Haeckel
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The Life-Story of Insects
George H. Carpenter
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Hints towards the formation of a more comprehensive theory of life.
Samuel Taylor Coleridge
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A Text-book of Entomology
A. S. Packard
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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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Evolution, Old & New
Samuel Butler
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Lehrbuch der Botanik für Hochschulen (German)
A. F. W. Schimper, Eduard Strasburger, Fritz Noll, and H. Schenck
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The Old Riddle and the Newest Answer
John Gerard
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Haeckel : his life and work
Wilhelm Bölsche
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The Variation of Animals and Plants under Domestication
Charles Darwin
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The Power of Movement in Plants
Charles Darwin and Sir Francis Darwin
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Mammals of Northwestern South Dakota
J. Knox Jones and Kenneth W. Andersen
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Seed Dispersal
W. J. Beal
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Amphibians and Reptiles of the Rainforests of Southern El Petén, Guatemala
William Edward Duellman
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The Amphibians and Reptiles of Michoacán, México
William Edward Duellman
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First Principles
Herbert Spencer
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Darwiniana; Essays and Reviews Pertaining to Darwinism
Asa Gray
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