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  1. By: Younghance, Steven L. - Freeman, John D.,
    Type: Article
    In: SIDA, contributions to botany
    Volume: 17
    Date: 1996
    Page Range: 367--384
    Publication Info: [Dallas W. F. Mahler, etc.] 1962-
  2. By: Diamond, Alvin R - Melo-Costa, Wanessa de - Freeman, John D.,
    Type: Article
    In: SIDA, contributions to botany
    Volume: 15
    Date: 1993
    Page Range: 623--638
    Publication Info: [Dallas W. F. Mahler, etc.] 1962-
  3. By: Short, John W - Freeman, John D.,
    Type: Article
    In: American fern journal
    Volume: 68
    Date: 1978
    Page Range: 95--95
    Publication Info: [Washington, etc.] American Fern Society
  4. By: Bowers, Frank D. - Freeman, John D.,
    Type: Article
    In: Evansia
    Volume: 6
    Issue: 2
    Date: 1989
    Page Range: 22--24
    Publication Info: Springfield, Mo American Bryological and Lichenological Society c1984-
  5. By: Short, John W - Freeman, John D.,
    Type: Article
    In: American fern journal
    Volume: 68
    Date: 1978
    Page Range: 1--2
    Publication Info: [Washington, etc.] American Fern Society
  6. By: Freeman, John D.,
    Type: Article
    In: American fern journal
    Volume: 77
    Date: 1987
    Page Range: 102--105
    Publication Info: [Washington, etc.] American Fern Society
  7. By: Freeman, John D., - Fukuda, Ichiro - Itou, Masakazu
    Type: Article
    In: Novon a journal of botanical nomenclature from the Missouri Botanical Garden
    Volume: 6
    Date: 1996
    Page Range: 164--171
    Publication Info: St. Louis, MO, Missouri Botanical Garden,
  8. By: Freeman, John D.,
    Type: Article
    In: SIDA, contributions to botany
    Volume: 3
    Date: 1969
    Page Range: 289--292
    Publication Info: [Dallas W. F. Mahler, etc.] 1962-