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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Atkinson, Robert E.
    Type: Article
    In: Lasca leaves
    Volume: 15
    Issue: Spring 1965
    Date: 1965
    Page Range: 25-48
    Publication Info: Arcadia, Calif, California Arboretum Foundation, 1950-1976
    Subjects: Humus  Mulching  Soil amendments -- California, Southern  Soil chemistry