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  1. By: Semple, John C. - Cook, Rachel E.
    Type: Article
    In: Rhodora
    Volume: 106
    Date: 2004
    Page Range: 253--272
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  2. By: Leonard, Michelle R - Cook, Rachel E. - Semple, John C.
    Type: Article
    In: SIDA, contributions to botany
    Volume: 21
    Date: 2005
    Page Range: 1471--1505
    Publication Info: [Dallas, W. F. Mahler, etc.], 1962-
  3. By: Cook, Rachel E. - Semple, John C.
    Type: Article
    In: SIDA, contributions to botany
    Volume: 21
    Date: 2004
    Page Range: 221--224
    Publication Info: [Dallas, W. F. Mahler, etc.], 1962-