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  1. Atlas of the rare vascular plants of Ontario /
    By: Argus, George W. - National Museum of Natural Sciences (Canada).
    Publication info: Ottawa :Botany Division, National Museum of Natural Sciences = Division de la botanique, Musée national des sciences naturelles,1982-1987.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  2. Les plantes vasculaires rares du Canada : notre patrimoine naturel /
    By: Argus, George W. - Pryer, Kathleen M. - Canadian Museum of Nature - Rare and Endangered Plants Project (Canada)
    Publication info: Ottawa :Programme des plantes rares et menacées, Musée canadien de la nature,1990.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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