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  1. Flore dévonienne de l'étage H. de Barrande / publié par H. Potonié et Ch. Bernard.
    By: Potonié, H. - Bernard, Charles.
    Publication info: Leipzig :R. Gerhard, ancienne maison W. Gerhard,[1903?]
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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