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120821
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120822
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120823Article of journalPublished in 2009Repositorio Universidad Nacional de Colombia
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120824http://purl.org/coar/resource_type/c_18ccPublished in 1990Repositorio Universidad Nacional de Colombia
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120825Article of journalPublished in 2009Repositorio Universidad Nacional de Colombia
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120826Article of journalPublished in 2012Repositorio Universidad Nacional de Colombia
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120827Article of journalPublished in 1954Repositorio Universidad Nacional de Colombia
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120828Article of journalPublished in 2003Repositorio Universidad Nacional de Colombia
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120829Article of journalPublished in 1972Repositorio Universidad Nacional de Colombia
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120830Article of journalPublished in 2001Repositorio Universidad Nacional de Colombia
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120831Article of journalPublished in 1957Repositorio Universidad Nacional de Colombia
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120832Article of journalPublished in 2017Repositorio Universidad Nacional de Colombia
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120833Article of journalPublished in 1995Repositorio Universidad Nacional de Colombia
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120834Article of journalPublished in 1984Repositorio Universidad Nacional de Colombia
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120835
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120836Article of journalPublished in 1988Repositorio Universidad Nacional de Colombia
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120837Article of journalPublished in 2012Repositorio Universidad Nacional de Colombia
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120838Article of journalPublished in 2015Repositorio Universidad Nacional de Colombia
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120839Doctoral thesisPublished in 2013Repositorio Universidad Nacional de Colombia
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120840