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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Ugent, Donald, - Tindall, Donald R - Doorenbos, Norman J
    Type: Article
    In: Phytologia
    Volume: 47
    Issue: 5
    Date: 1981
    Page Range: 420--440
    Publication Info: Bronx Park, New York H.A. Gleason and H.N. Moldenke