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  1. By: Nicholson, Rob
    Type: Article
    In: Arnoldia
    Volume: 50
    Issue: 4
    Date: 1990
    Page Range: 24--31
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  2. By: Nicholson, Rob
    Type: Article
    In: Arnoldia
    Volume: 57
    Issue: 2
    Date: 1997
    Page Range: 17--24
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  3. By: Nicholson, Rob
    Type: Article
    In: Arnoldia
    Volume: 58
    Issue: 1
    Date: 1998
    Page Range: 20--26
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  4. By: Nicholson, Rob
    Type: Article
    In: Arnoldia
    Volume: 59
    Issue: 2
    Date: 1999
    Page Range: 26--34
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  5. By: Nicholson, Rob
    Type: Article
    In: Arnoldia
    Volume: 63
    Issue: 1
    Date: 2004
    Page Range: 21--27
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  6. By: Nicholson, Rob
    Type: Article
    In: Arnoldia
    Volume: 68
    Issue: 3
    Date: 2011
    Page Range: 11--18
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University