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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Middleton, John, - Kendrick, James Blair,
    Type: Article
    In: Lasca leaves
    Volume: 5
    Date: 1955
    Page Range: 7-11
    Publication Info: Arcadia, Calif, California Arboretum Foundation, 1950-1976
    Subjects: Crops -- Effect of air pollution on -- California  Plants -- Effect of air pollution on -- California