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1Article of journalPor Demarco, DiegoPublished in 2015Repositorio Universidad Nacional de Colombia
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2Article of journalPor Allorge, LucilePublished in 1986Repositorio Universidad Nacional de Colombia
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3Article of journalPor de Carvalho, Mario Geraldo; Rojas Cardozo, Maritza A.; da Silva, Virginia Claudia; Werle, Alceni AugustaPublished in 2007Repositorio Universidad Nacional de Colombia
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4Published in 2008Repositorio Repositorio EdocUR - U. Rosario
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5Trabajo de grado de pregradoPublished in 2005Repositorio Repositorio Universidad Javeriana
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6Trabajo de grado de pregradoPublished in 2004Repositorio Repositorio Unisucre
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7Article of journalPublished in 1943Repositorio Universidad Nacional de Colombia
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8Article of journalPublished in 1960Repositorio Universidad Nacional de Colombia
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9Article of journalPor Dugand, ArmandoPublished in 1948Repositorio Universidad Nacional de Colombia
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11Article of journalPublished in 2016Repositorio Universidad Nacional de Colombia
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12Article of journalPublished in 2010Repositorio Repositorio Digital Universidad de los LLanos
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13Published in 1998Repositorio Repositorio EdocUR - U. Rosario
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14Article of journalPublished in 2010Repositorio Repositorio Digital Universidad de los LLanos
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15Doctoral thesisPublished in 2017Repositorio Universidad Nacional de Colombia
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16Published in 2012Repositorio Universidad Nacional de Colombia
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17Article of journalPublished in 2005Repositorio Universidad Nacional de Colombia
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19Article of journalPublished in 2015Repositorio Universidad Nacional de Colombia
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20Published in 2016Repositorio Universidad Nacional de Colombia
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