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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Koch, Leo Francis,
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 11
    Date: 1952
    Page Range: 209--214
    Publication Info: Berkeley, California Botanical Society,
  2. By: Koch, Leo Francis,
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 13
    Date: 1955
    Page Range: 100--101
    Publication Info: Berkeley, California Botanical Society,
  3. By: Koch, Leo Francis,
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 14
    Date: 1958
    Page Range: 206--211
    Publication Info: Berkeley, California Botanical Society,