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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Stewart, William S. - Wilken, Dieter H.
    Type: Article
    In: Lasca leaves
    Volume: 16
    Issue: Autumn 1966
    Date: 1966
    Page Range: 84-85
    Publication Info: Arcadia, Calif, California Arboretum Foundation, 1950-1976
    Subjects: Shade trees -- California, Southern  Smog  Trees in cities -- California, Southern