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  1. Flore fossile des gîtes de charbon du Tonkin,
    By: Zeiller, R.
    Publication info: Paris,Impr. nationale,1902-1903.
    Contributed by: Mertz Library, The New York Botanical Garden
    BHL Collections: New York 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
    BHL Collections: Smithsonian Institution Libraries
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