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  1. By: Unger, F. (Franz),
    Publication info: Leipzig, In commission bei W. Engelmann, 1847
    Holding Institution: North Carolina Museum of Natural Sciences
    Subjects: Paléobotanique  Paleobotany  
    BHL Collections: Expanding Access to Biodiversity Literature
  2. By: Laurent, Louis
    Publication info: Marseille‎, Typographie et Lithographie Moullot fils aîné‎, 1899
    Holding Institution: Muséum national d'Histoire naturelle
    Subjects: Célas  France  Paléobotanique  Paleobotany  Tertiary