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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Langenheim, J H - Lee, Y T
    Type: Article
    In: Journal of the Arnold Arboretum
    Volume: 55
    Issue: 3
    Date: 1974
    Page Range: 441--452
    Publication Info: Cambridge, Mass Arnold Arboretum, Harvard University [etc.] 1919-
  2. By: Langenheim, J H - Lee, Y T
    Type: Article
    In: Journal of the Arnold Arboretum
    Volume: 54
    Issue: 1
    Date: 1973
    Page Range: 94--104
    Publication Info: Cambridge, Mass Arnold Arboretum, Harvard University [etc.] 1919-