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501Article of journalPublished in 2003Repositorio Universidad Nacional de Colombia
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502Article of journalPublished in 2003Repositorio Universidad Nacional de Colombia
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503Article of journalPublished in 1948Repositorio Universidad Nacional de Colombia
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504Article of journalPublished in 1941Repositorio Universidad Nacional de Colombia
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505Article of journalPublished in 2003Repositorio Universidad Nacional de Colombia
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506Article of journalPublished in 2010Repositorio Universidad Nacional de Colombia
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507Article of journalPor Dávila, Julio D.Published in 2012Repositorio Universidad Nacional de Colombia
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508Article of journalPublished in 1934Repositorio Universidad Nacional de Colombia
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509Article of journalPublished in 2005Repositorio Universidad Nacional de Colombia
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510Article of journalPublished in 1951Repositorio Universidad Nacional de Colombia
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511
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512Article of journalPublished in 1997Repositorio Universidad Nacional de Colombia
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513Published in 2012Repositorio Universidad Nacional de Colombia
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514Published in 1987Repositorio Repositorio Digital USB
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515
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516
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517
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518Trabajo de grado de pregradoPublished in 2016Repositorio Repositorio Universidad Javeriana
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519Trabajo de grado de pregradoPublished in 2010Repositorio Repositorio Universidad Javeriana
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520Article of journalPublished in 2014Repositorio REDICUC - Repositorio CUC
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