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Darwin, and After Darwin, Volumes 1 and 3
George John Romanes
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Species and Varieties, Their Origin by Mutation
Hugo de Vries
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The Making of Species
Douglas Dewar and Frank Finn
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A Critical Examination of the Position of Mr. Darwin's Work, "On the Origin of Species," in Relation to the Complete Theory of the Causes of the Phenomena of Organic Nature
Thomas Henry Huxley
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The Wonders of Life: A Popular Study of Biological Philosophy
Ernst Haeckel
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Darwiniana : Essays — Volume 02
Thomas Henry Huxley
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The Story of Evolution
Joseph McCabe
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The Evolution Theory, Vol. 2 of 2
August Weismann
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Darwin, and After Darwin, Volume 2 of 3
George John Romanes
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Über die Entstehung der Arten im Thier- und Pflanzen-Reich durch natürliche Züchtung (German)
Charles Darwin
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Essays Upon Heredity and Kindred Biological Problems
August Weismann
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The Present Condition of Organic Nature
Thomas Henry Huxley
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Canterbury Pieces
Samuel Butler
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Darwin, and After Darwin, Volume 3 of 3
George John Romanes
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Problems of Genetics
William Bateson
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On the Reception of the 'Origin of Species'
Thomas Henry Huxley
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A Theory of Creation: A Review of 'Vestiges of the Natural History of Creation'
Francis Bowen
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The Perpetuation of Living Beings, Hereditary Transmission and Variation
Thomas Henry Huxley
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Freedom in Science and Teaching.
Ernst Haeckel
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Darwinism stated by Darwin himself
Charles Darwin
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Evolution: Its nature, its evidence, and its relation to religious thought
Joseph LeConte
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Note on the Resemblances and Differences in the Structure and the Development of the Brain in Man and Apes
Charles Darwin and Thomas Henry Huxley
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Little Masterpieces of Science: The Naturalist as Interpreter and Seer
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The Conditions of Existence as Affecting the Perpetuation of Living Beings
Thomas Henry Huxley
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Criticisms on "The Origin of Species"
Thomas Henry Huxley
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