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  1. By: Upton, Javier Lopez - Fiscal, Valentín Velazco - Mata, Jesús Jasso - Ramírez-Herrera, Carlos - Hernández, Jesús Vargas
    Type: Article
    In: Acta Botánica Mexicana
    Volume: 57
    Date: 2001
    Page Range: 51--66
    Publication Info: México, Instituto de Ecología, A C, 1988-