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  1. Correspondence : Heer (Oswald) and Engelmann (George), 1858.
    By: Heer, Oswald,
    Contributed by: Missouri Botanical Garden, Peter H. Raven Library
    Subjects: (Ernst Heinrich Friedrich),  1791-1858  1809-1883  1809-1884  Correspondence  Engelmann, George,  Heer, Oswald,  Letters  Malvaceae  Meyer, Ernst H. F  Receipts (Acknowledgments)  
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
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  2. Oswald Heer : notice biographique /
    By: Zeiller, R.
    Publication info: S.l. :s.n.,188-?
    Contributed by: Smithsonian Libraries
    Subjects: 1809-1883  Biography  Heer, Oswald,  Paleobotanists  Paleontologists  Switzerland  
    BHL Collections: Smithsonian Libraries
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