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  1. By: Lira Saade, Rafael. - Castrejón, Javier - Zamudio-Ruiz, Sergio - Rojas Zenteno, Ezequiel Carlos
    Type: Article
    In: Acta Botánica Mexicana
    Volume: 49
    Date: 1999
    Page Range: 47--61
    Publication Info: México, Instituto de Ecología, A C, 1988-