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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Ching, Francis
    Type: Article
    In: Lasca leaves
    Volume: 12
    Issue: Spring 1962
    Date: 1962
    Page Range: 33-34
    Publication Info: Arcadia, Calif, California Arboretum Foundation, 1950-1976
    Subjects: Soils -- Analysis