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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Newbanks, D. - Roy, D N - Zimmermann, Martin Huldrych,
    Type: Article
    In: Arnoldia
    Volume: 42
    Issue: 2
    Date: 1982
    Page Range: 60--69
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University