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  1. By: Ceska, Adolf - Ceska, Oldriska
    Type: Article
    In: The Canadian field-naturalist
    Volume: 94
    Issue: 1
    Date: 1980
    Page Range: 69--74
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Ceska, Adolf - Ceska, Oldriska
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 73
    Date: 1986
    Page Range: 825--827
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-
  3. By: Peterson, Paul M. - Annable, Carol R - Joyal, Elaine - Ceska, Adolf - Ceska, Oldriska
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 33
    Date: 1986
    Page Range: 79--80
    Publication Info: Berkeley, California Botanical Society,