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  1. Genera et species plantarum fossilium. Sumptibus Academiae Caesareae Scientiarum.
    By: Unger, Franz Joseph Andreas Nicolas, - Akademie der Wissenschaften in Wien.
    Publication info: VindobonaeW. Braum√ľller1850
    Contributed by: University of Toronto - Gerstein Science Information Centre
    Subjects: Nomenclators  Paleobotany  
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