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68801Article of journalPublished in 2001Repositorio Universidad Nacional de Colombia
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68802Article of journalPublished in 2013Repositorio Universidad Nacional de Colombia
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68803
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68804
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68805Work documentPublished in 1971Repositorio Universidad Nacional de Colombia
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68806Article of journalPublished in 2014Repositorio Universidad Nacional de Colombia
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68807
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68808
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68809Article of journalPublished in 2005Repositorio Universidad Nacional de Colombia
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68810http://purl.org/coar/resource_type/c_c94fPublished in 2009Repositorio Universidad Nacional de Colombia
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68811Article of journalPublished in 2005Repositorio Universidad Nacional de Colombia
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68812Article of journalPor , ANONIMOPublished in 2005Repositorio Universidad Nacional de Colombia
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68813Article of journalPublished in 2012Repositorio Universidad Nacional de Colombia
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68814Article of journalPublished in 2010Repositorio Universidad Nacional de Colombia
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68815Article of journalPublished in 1983Repositorio Universidad Nacional de Colombia
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68816
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68817Article of journalPublished in 2008Repositorio Universidad Nacional de Colombia
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68818Article of journalPublished in 2012Repositorio Universidad Nacional de Colombia
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68819Doctoral thesisPublished in 2019Repositorio Universidad Nacional de Colombia
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68820http://purl.org/coar/resource_type/c_18ccPublished in 2005Repositorio Universidad Nacional de Colombia