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  1. By: Rettig, J H
    Type: Article
    In: Rhodora
    Volume: 92
    Date: 1990
    Page Range: 70--79
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  2. By: Rettig, J H
    Type: Article
    In: SIDA, contributions to botany
    Volume: 14
    Date: 1990
    Page Range: 132--133
    Publication Info: [Dallas, W. F. Mahler, etc.], 1962-
  3. By: Crins, William J. - Rettig, J H
    Type: Article
    In: Novon a journal of botanical nomenclature from the Missouri Botanical Garden
    Volume: 6
    Date: 1996
    Page Range: 117--118
    Publication Info: St. Louis, MO, Missouri Botanical Garden,
  4. By: Rettig, J H
    Type: Article
    In: SIDA, contributions to botany
    Volume: 13
    Date: 1989
    Page Range: 449--452
    Publication Info: [Dallas, W. F. Mahler, etc.], 1962-