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1241Article of journalPublished in 2009Repositorio Universidad Nacional de Colombia
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1242Article of journalPublished in 1999Repositorio Universidad Nacional de Colombia
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1243Article of journalPublished in 2009Repositorio Universidad Nacional de Colombia
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1244Article of journalPublished in 2010Repositorio Universidad Nacional de Colombia
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1245Article of journalPublished in 1991Repositorio Universidad Nacional de Colombia
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1246Article of journalPublished in 2012Repositorio Universidad Nacional de Colombia
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1247Article of journalPublished in 2009Repositorio Universidad Nacional de Colombia
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1248Article of journalPublished in 2016Repositorio Universidad Nacional de Colombia
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1249Article of journalPublished in 2008Repositorio Universidad Nacional de Colombia
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1250Article of journalPublished in 2016Repositorio Universidad Nacional de Colombia
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1251Article of journalPublished in 2009Repositorio Universidad Nacional de Colombia
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1252
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1253
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1254
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1255
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1256Published in 2013Repositorio Repositorio UMNG
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1257
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1258
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1259Article of journalPublished in 2014Repositorio Biblioteca Digital Universidad Externado de Colombia
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1260