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The Fern gazette - British Pteridological Society. (British Pteridological Society, 2005)

The Fern gazette - British Pteridological Society. (British Pteridological Society, 2006)

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Flora del Valle de Tehuacán-Cuicatlán (Universidad Nacional Autónoma de México, 2009)

Flora del Valle de Tehuacán-Cuicatlán (Universidad Nacional Autónoma de México, 2010)

Flora der Baar und der angrenzenden Landesteile - Zahn, Karl Hermann, 1865 -1940 (s.n, 1889)

Die Flora der deutschen Schutzgebiete in der Südsee - Schumann, K. (Karl) 1851 -1904 (verlag von Gebrüder Borntraeger, 1901)

Flora der gefürsteten Grafshaft Tirol, des Landes Vorarlberg und des Fürstenthumes Liechtenstein - Dalla Torre, K. W. von (Karl Wilhelm), 1850 -1928 (Verlag der Wagner'-schen Universitäts-Buchhandlung, 1903)

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