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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Hardham, Clare B - True, Gordon H
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 21
    Date: 1972
    Page Range: 499--504
    Publication Info: Berkeley, California Botanical Society,
  2. By: Hardham, Clare B
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 16
    Date: 1962
    Page Range: 173--179
    Publication Info: Berkeley, California Botanical Society,