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  1. By: Schwartz, Owen M.
    Type: Article
    In: The Orchadian
    Volume: 12
    Issue: 5
    Date: 1997-09
    Page Range: 229--232
    Publication Info: [Sydney, N.S.W.] The Society 1963 -
  2. By: Schwartz, Owen M.
    Type: Article
    In: Evansia
    Volume: 8
    Issue: 3
    Date: 1991
    Page Range: 55--73
    Publication Info: Springfield, Mo American Bryological and Lichenological Society c1984-