Technical publication - New York State College of Forestry at Syracuse University. (The College, 1914)

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Természetrajzi Füzetek kiadja a Magyar nemzeti Muzeum - Magyar Nemzeti Múzeum. (Franklin-társulat nyomdája [etc.], 1890)

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La terre avant l'histoire : les origines de la vie et de l'homme - Perrier, Edmond, 1844 -1921 (La Renaissance du Livre, 1921)

Tetractys naturae : seu, Systema quadrimembre omnium naturalium - Gori͡aninov, Pavel Fedorovich, 1796 -1865 (Typis K. Wienhöberianis, 1843)

A text-book of invertebrate morphology - McMurrich, J. Playfair (James Playfair), 1859 -1939 (H. Holt and Company, 1894)

Text-book of structural and physiological botany - Bennett, Alfred W. (Alfred William), 1833 -1902 (Longmans, Green, 1885)

A textbook of invertebrate morphology - McMurrich, J. Playfair (James Playfair), 1859 -1939 (H. Holt, 1896)

Thesaurus literaturae botanicae omnium gentium :inde a rerum botanicarum initiis ad nostra usque tempora, quindecim millia operum recensens - Pritzel, G. A. (Georg August), 1815 -1874 (F. A. Brockhaus, 1851)

Das Thierreich, geordnet nach seiner Organisation : als Grundlage der Naturgeschichte der Thiere und Einleitung in die vergleichende Anatomie - Cuvier, Georges, baron, 1769 -1832 (F.A. Brockhaus, 1843)

Das Thierreich nach den Verwandtschaften und Uebergängen in den Klassen und Ordnungen desselben - Gravenhorst, J. L. C. (Johann Ludwig Christian), 1777 -1857 (Druck und Verlag von Grass, Barth und Comp, 1845)

Die Tier- und Pflanzenwelt des Süsswassers : Einführung in das Studium derselben - Zacharias, Otto, 1846 -1916 (J.J. Weber, 1891)

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Trail & landscape - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1998)

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Traité de zoologie concrète - Delage, Yves, 1854 -1920 (Schleicher, 1896)

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Traité élémentaire de paléontologie; ou, Histoire naturelle des animaux fossiles, considérés dans leurs rapports zoologiques et géologiques - Pictet, François Jules, 1809 -1872 (Langlois et Leclerq, 1844)

Traité pratique du microscope et de son emploi dans l'étude des corps organisés; suivi de Recherches sur l'organisation des animaux infusoires - Ehrenberg, Christian Gottfried, 1795 -1876 (J.B. Baillière, 1839)

Traité pratique de micrographie appliquée à la botanique, à la zoologie, à l'hygiène et aux recherches cliniques - Gérard, René Constant Joseph, 1853 - (O. Doin, 1887)

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