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By: Graebner, Paul,Edition:Publication info: Berlin, Gebr. Borntraeger, 1903Volume:Series:Holding Institution: New York Botanical Garden, LuEsther T. Mertz LibrarySubjects: Germany, Northern Identification PlantsBHL Collections:
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By: Maske, Erich,Edition:Publication info: Alfeld, P. Dobler, [1906]Volume:Series:Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr LibrarySubjects: Ammonoidea Cephalopoda, Fossil Germany, Northern Mollusks, Fossil Paloeontology StratigraphicBHL Collections: