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- Elements of physiology
By: Müller, Johannes, - Baly, William,
Publication info: London, Taylor & Walton, 1838-1842
Volume: v.1
Pages: Page 19 - Die Geschlechter-Vertheilung bei den Pflanzen
By: Hildebrand, Friedrich.
Publication info: Leipzig, Wilhelm Engelmann, 1867
Pages: Page 82 - A history of British birds
By: Yarrell, William,
Publication info: London, John Van Voorst, 1839
Pages: Page 209 - Introduction á la zoologie générale
By: Milne-Edwards, H. (Henri),
Publication info: Paris, Victor Masson, 1851
Pages: Page 86 - Studien zur Descendenztheorie. I
By: Weismann, August,
Publication info: Leipzig, Engelmann, 1875
Pages: Page 79 Page 79 - über den Einfluss der Isolirung auf die Artbildung
By: Weismann, August,
Publication info: Leipzig, W. Engelmann, 1872
Pages: Page 15 Page 15 - Versuche und Beobachtungen über die Bastarderzeugung im Pflanzenreich
By: Gärtner, Carl Friedrich von,
Publication info: Stuttgart, [s.n.], 1849
Pages: Page 65 Page 65