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1Article of journalPublished in 2015Repositorio Repositorio Institucional U. Caldas
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2Article of journalPublished in 2015Repositorio Repositorio U. de Caldas
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5Article of investigationPor Ramírez Mora, Manuel Alejandro; Buenaventura Ruíz, Eliana; Gómez Piñerez, Luz Miryam; Amat García, Eduardo CarloPublished in 2012Repositorio Repositorio Tdea