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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Hill, Albert J
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 22
    Date: 1973
    Page Range: 100--104
    Publication Info: Berkeley, California Botanical Society,
  2. By: Hill, Albert J
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 60
    Date: 2013
    Page Range: 320--324
    Publication Info: Berkeley, California Botanical Society,