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4261
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4262
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4263
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4264
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4265
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4266
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4267
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4268
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4269Article of journalPublished in 2003Repositorio Universidad Nacional de Colombia
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4270Published in 2011Repositorio Universidad Nacional de Colombia
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4271Article of journalPublished in 2008Repositorio Universidad Nacional de Colombia
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4272Published in 2010Repositorio Repositorio Uninorte
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4273Por María Amarís Macías; Universidad del Norte; Angélica Patemina Marin; Universidad del Norte; Katherine Vargas Cantillo; Universidad del NortePublished in 2011Repositorio Repositorio Uninorte
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4274
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4275
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4276
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4277
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4278
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4279
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4280Article of journalPublished in 2011Repositorio Repositorio Universidad Javeriana
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