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Illustrated handbook of succulent plants
Focke Albers, Ulrich Meve · Springer
321 sayfa · 2002
Asclepiadaceae / Handbooks, manuals / Classification / Plants, classification
Standardliste der Farn-und Blutenpflanzen Deutschlands (Standard list of Ferns and Flowering Plants of Germany)
Rolf Wisskirchen, Henning Haeupler, Focke Albers · Verlag Eugen Ulmer
765 sayfa · 1998
Botany, germany / Ferns