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Transactions of the Norfolk and Norwich Naturalists' Society - Norfolk; Norwich Naturalists' Society. (Norfolk and Norwich Naturalists' Society, 1935)

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Trees and shrubs of Mexico - Standley, Paul Carpenter, 1884 -1963 (Govt. Print. Off, 1920)

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The trees, shrubs, and woody-climbers of the Bombay Presidency - Talbot, W. A. (William Alexander), 1847 -1917 (Government Central Press, 1902)

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Übersicht des natürlichen Systems der Pflanzen : zum Gebrauch in Vorlesungen für Anfänger - Pfitzer, Ernst Hugo Heinrich, 1846 -1906 (C. Winter, 1894)

Über die Natur der Schachtelhalme : insbesondere des Sumpf-Schachtelhalms oder Duwocks ... - Meyer, G. F. W. (Georg Friedrich Wilhelm), 1782 -1856 (Gedruckt in der Dieterichschen Universitäts-Buchdruckerei, 1837)

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Ueber das Dickenwachsthum des Holzkoerpers in seiner Abhaengigkeit von aeusseren einfluessen - Kny, L. (Leopold), 1841 -1916 (P. Parey, 1882)

Uebersicht des Gewaechs-Reichs in seinen natuerlichen Entwickelungsstufen : ein Versuch - Reichenbach, H. G. Ludwig (Heinrich Gottlieb Ludwig), 1793 -1879 (Carl Cnobloch, 1828)

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