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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Becking, Rudolf W
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 20
    Date: 1970
    Page Range: 382--383
    Publication Info: Berkeley, California Botanical Society,
  2. By: Sherman, Harry L - Becking, Rudolf W
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 38
    Date: 1991
    Page Range: 130--138
    Publication Info: Berkeley, California Botanical Society,
  3. By: Becking, Rudolf W
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 33
    Date: 1986
    Page Range: 175--181
    Publication Info: Berkeley, California Botanical Society,
  4. By: Becking, Rudolf W
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 36
    Date: 1989
    Page Range: 208--216
    Publication Info: Berkeley, California Botanical Society,