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2by CantoLara,Silvia B, Van Wynsberghe,Nicole R, Vargas-González,Alberto, Ojeda-Farfán,Fanny F, Andrade-Narváez,Fernando J
Published 1999Digital revistaSCIELO -
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4by Andrade-Narvaez,Fernando J, Lara,Silvia B Canto, Van Wynsberghe,Nicole R, Rebollar-Tellez,Eduardo A, Vargas-Gonzalez,Alberto, Albertos-Alpuche,Nelly E
Published 2003Digital revistaSCIELO