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  1. By: Breteler, F. J. (Franciscus Jozef), - Welle, B. J. H. ter (Ben J. H.) - Gasson, Peter Eric - Ferguson, I. K. (Ian Keith),
    Type: Article
    In: Adansonia
    Volume: 19
    Series: 4
    Issue: 2
    Date: 1997
    Page Range: 279--291
    Publication Info: Paris, Ed. scientifiques du Muséum, 1997-
  2. By: Ferguson, I. K. (Ian Keith),
    Type: Article
    In: Journal of the Arnold Arboretum
    Volume: 47
    Issue: 2
    Date: 1966
    Page Range: 106--116
    Publication Info: Cambridge, Mass Arnold Arboretum, Harvard University [etc.] 1919-
  3. By: Dransfield, John - Ferguson, I. K. (Ian Keith), - Uhl, Natalie W.
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 77
    Date: 1990
    Page Range: 802--815
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-
  4. By: Ferguson, I. K. (Ian Keith),
    Type: Article
    In: Journal of the Arnold Arboretum
    Volume: 47
    Issue: 1
    Date: 1966
    Page Range: 33--59
    Publication Info: Cambridge, Mass Arnold Arboretum, Harvard University [etc.] 1919-
  5. By: Ferguson, I. K. (Ian Keith),
    Type: Article
    In: Journal of the Arnold Arboretum
    Volume: 46
    Issue: 2
    Date: 1965
    Page Range: 218--231
    Publication Info: Cambridge, Mass Arnold Arboretum, Harvard University [etc.] 1919-
  6. By: Ferguson, I. K. (Ian Keith), - Brizicky, George K. (George Konstantin),
    Type: Article
    In: Journal of the Arnold Arboretum
    Volume: 46
    Issue: 3
    Date: 1965
    Page Range: 362--365
    Publication Info: Cambridge, Mass Arnold Arboretum, Harvard University [etc.] 1919-
  7. By: Ferguson, I. K. (Ian Keith),
    Type: Article
    In: Journal of the Arnold Arboretum
    Volume: 47
    Issue: 2
    Date: 1966
    Page Range: 100--105
    Publication Info: Cambridge, Mass Arnold Arboretum, Harvard University [etc.] 1919-