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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Galinat, Walton C - Mangelsdorf, Paul C - Pierson, L
    Type: Article
    In: Botanical Museum leaflets, Harvard University
    Volume: 17
    Issue: 4
    Date: 1956-03-06
    Page Range: 101--124
    Publication Info: Cambridge, Mass Botanical Museum, Harvard University 1932-