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2681Article of journalPublished in 2009Repositorio Universidad Nacional de Colombia
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2682Article of journalPor Guerrero, OmarPublished in 2013Repositorio Universidad Nacional de Colombia
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2683Published in 2011Repositorio Universidad Nacional de Colombia
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2684
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2685
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2686
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2687http://purl.org/coar/version/c_b1a7d7d4d402bccePublished in 2008Repositorio Repositorio UIS
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2688http://purl.org/coar/version/c_b1a7d7d4d402bccePublished in 2015Repositorio Repositorio UIS
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2689Published in 2011Repositorio Universidad Nacional de Colombia
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2690Published in 2012Repositorio Universidad Nacional de Colombia
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2691Published in 2006Repositorio Universidad Nacional de Colombia
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2692
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2693
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2694
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2695
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2696
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2697Trabajo de grado de pregradoPublished in 2013Repositorio Repositorio Universidad del Quindío
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2698
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2699
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2700