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  1. By: Maples, Robert S - Lutes, Dallas D
    Type: Article
    In: American fern journal
    Volume: 56
    Date: 1966
    Page Range: 33--36
    Publication Info: [Washington, etc.] American Fern Society
  2. By: Maples, Robert S
    Type: Article
    In: Gulf research reports
    Volume: 7
    Issue: 3
    Date: 1983
    Page Range: 255--259
    Publication Info: Ocean Springs, Miss, Gulf Coast Research Laboratory, 1961-
  3. By: Maples, Robert S - Watson, James C
    Type: Article
    In: Gulf research reports
    Volume: 6
    Issue: 3
    Date: 1979
    Page Range: 301--303
    Publication Info: Ocean Springs, Miss, Gulf Coast Research Laboratory, 1961-