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5861Article of journalPublished in 2011Repositorio Universidad Nacional de Colombia
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5862Article of journalPublished in 2009Repositorio Universidad Nacional de Colombia
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5863Article of journalPublished in 2012Repositorio Universidad Nacional de Colombia
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5864
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5866
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5870
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5871
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5874
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5875
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5876
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5877
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5879
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5880