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  1. Flora of Guatemala / Paul C. Standley and Louis O. Williams.
    By: Standley, Paul Carpenter, - Lundell, Cyrus Longworth, - Williams, Louis Otho,
    Publication info: Chicago, Ill. :Chicago Natural History Museum,1966.
    Contributed by: University Library, University of Illinois Urbana Champaign
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  2. The genus Parathesis of the Myrsinaceae.
    By: Lundell, Cyrus Longworth,
    Publication info: Renner :Texas Research Foundation,1966.
    Contributed by: Missouri Botanical Garden, Peter H. Raven Library
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