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By: Pedraza, Milton J. - Rubio, Efraín A. - Zapata P., Luis A.Type: ArticleIn: Gayana (Concepción)Volume:Series:Issue:Date: 2002-01-01Page Range:Publication Info:Subjects:
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By: Rubio, Efraín A. - Pedraza, Milton J. - Zapata P., Luis A.Type: ArticleIn: Gayana (Concepción)Volume:Series:Issue:Date: 2005-01-01Page Range:Publication Info:Subjects:
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By: Rubio, Efraín A. - Pedraza, Milton J. - Zapata P., Luis A.Type: ArticleIn: Gayana (Concepción)Volume:Series:Issue:Date: 2005-01-01Page Range:Publication Info:Subjects: