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861
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862
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863
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864Article of journalPublished in 2009Repositorio Universidad Nacional de Colombia
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865Article of journalPublished in 2009Repositorio Universidad Nacional de Colombia
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866Article of journalPublished in 2013Repositorio Universidad Nacional de Colombia
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867Article of journalPublished in 2010Repositorio Universidad Nacional de Colombia
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868
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869Por Carlos Arturo Campo Ternera; universidad del Norte; Rafael de Jesùs Tuesca-Molina; Universidad Del Norte; Lilia Campo Ternera; Universidad Simón BolívarPublished in 2012Repositorio Repositorio Uninorte
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870Article of journalPublished in 2006Repositorio Repositorio Universidad de Cartagena
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871
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872
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873Published in 2008Repositorio Repositorio EdocUR - U. Rosario
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874
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875
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876Published in 2011Repositorio Séneca: repositorio Uniandes
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877Article of journalPublished in 2016Repositorio Repositorio Universidad Javeriana
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878
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879
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880