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  1. By: Kerr, Thomas - Bailey, Irving W. (Irving Widmer),
    Type: Article
    In: Journal of the Arnold Arboretum
    Volume: 15
    Issue: 4
    Date: 1934
    Page Range: 327--349
    Publication Info: Cambridge, Mass Arnold Arboretum, Harvard University [etc.] 1919-
  2. By: Bailey, Irving W. (Irving Widmer), - Kerr, Thomas
    Type: Article
    In: Journal of the Arnold Arboretum
    Volume: 18
    Issue: 4
    Date: 1937
    Page Range: 261--272
    Publication Info: Cambridge, Mass Arnold Arboretum, Harvard University [etc.] 1919-
  3. By: Bailey, Irving W. (Irving Widmer), - Kerr, Thomas
    Type: Article
    In: Journal of the Arnold Arboretum
    Volume: 16
    Issue: 3
    Date: 1935
    Page Range: 273--300
    Publication Info: Cambridge, Mass Arnold Arboretum, Harvard University [etc.] 1919-