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  1. By: Dirr, Michael A. - Alexander, John H. (John Herbert),
    Type: Article
    In: Arnoldia
    Volume: 39
    Issue: 1
    Date: 1979
    Page Range: 16--21
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  2. By: Dirr, Michael A. - Alexander, John H. (John Herbert),
    Type: Article
    In: Arnoldia
    Volume: 51
    Issue: 4
    Date: 1991
    Page Range: 43--46
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  3. By: Koller, Gary L. - Dirr, Michael A.
    Type: Article
    In: Arnoldia
    Volume: 39
    Issue: 3
    Date: 1979
    Page Range: 83--138
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  4. By: Koller, Gary L. - Dirr, Michael A.
    Type: Article
    In: Arnoldia
    Volume: 39
    Issue: 3
    Date: 1979
    Page Range: 233--234
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  5. By: Koller, Gary L. - Dirr, Michael A.
    Type: Article
    In: Arnoldia
    Volume: 39
    Issue: 3
    Date: 1979
    Page Range: 205--221
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  6. By: Dirr, Michael A.
    Type: Article
    In: Arnoldia
    Volume: 38
    Issue: 5
    Date: 1978
    Page Range: 173--179
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  7. By: Dirr, Michael A. - Alexander, John H. (John Herbert),
    Type: Article
    In: Arnoldia
    Volume: 51
    Issue: 2
    Date: 1991
    Page Range: 17--22
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  8. By: Koller, Gary L. - Dirr, Michael A.
    Type: Article
    In: Arnoldia
    Volume: 39
    Issue: 3
    Date: 1979
    Page Range: 73--82
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  9. By: Koller, Gary L. - Dirr, Michael A.
    Type: Article
    In: Arnoldia
    Volume: 39
    Issue: 3
    Date: 1979
    Page Range: 222--232
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  10. By: Koller, Gary L. - Dirr, Michael A.
    Type: Article
    In: Arnoldia
    Volume: 39
    Issue: 3
    Date: 1979
    Page Range: 139--167
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  11. By: Koller, Gary L. - Dirr, Michael A.
    Type: Article
    In: Arnoldia
    Volume: 39
    Issue: 3
    Date: 1979
    Page Range: 73--82
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  12. By: Dirr, Michael A.
    Type: Article
    In: Arnoldia
    Volume: 51
    Issue: 3
    Date: 1991
    Page Range: 18--21
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  13. By: Koller, Gary L. - Dirr, Michael A.
    Type: Article
    In: Arnoldia
    Volume: 39
    Issue: 3
    Date: 1979
    Page Range: 168--204
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University