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  1. By: Gutiérrez, Marcelo H - Pantoja, Silvio - Quiñones, Renato A. - González, Rodrigo R.
    Type: Article
    In: Gayana (Concepción)
    Date: 2010-01-01
  2. By: Quiñones, Renato A. - González, Rodrigo R. - Levipan Colil, Héctor Armando - Gerdhard, Jessen - Gutiérrez, Marcelo H
    Type: Article
    In: Gayana (Concepción)
    Date: 2006-10-01