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By "Planck, R. J. "
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An ecological study of Cypripedium passerinum Rich. (Sparrow's Egg Lady-shpper, Orchidaceae) on the north shore of Lake Superior
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By: Keddy, Cathy J. - Keddy, Paul A., - Planck, R. J.
Type: Article
In: The Canadian field-naturalist
Volume: 97
Series:
Issue: 3
Date: 1983
Page Range: 268--274
Publication Info: Ottawa Ottawa Field-Naturalists' Club
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