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801Article of journalPublished in 1990Repositorio Universidad Nacional de Colombia
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802Article of journalPublished in 2014Repositorio Universidad Nacional de Colombia
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803Article of journalPublished in 1969Repositorio Universidad Nacional de Colombia
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804Article of journalPublished in 2012Repositorio Universidad Nacional de Colombia
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805Article of journalPublished in 2009Repositorio Universidad Nacional de Colombia
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806Article of journalPublished in 1971Repositorio Universidad Nacional de Colombia
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807Article of journalPublished in 2001Repositorio Universidad Nacional de Colombia
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808Article of journalPublished in 1997Repositorio Universidad Nacional de Colombia
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809Article of journalPublished in 2011Repositorio Universidad Nacional de Colombia
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810Article of journalPublished in 1957Repositorio Universidad Nacional de Colombia
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811Article of journalPublished in 2008Repositorio Universidad Nacional de Colombia
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812Article of journalPor Dugand, ArmandoPublished in 1955Repositorio Universidad Nacional de Colombia
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813Article of journalPublished in 1986Repositorio Universidad Nacional de Colombia
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814Article of journalPublished in 1986Repositorio Universidad Nacional de Colombia
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815Article of journalPublished in 2009Repositorio Universidad Nacional de Colombia
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816Article of journalPublished in 1983Repositorio Universidad Nacional de Colombia
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817Article of journalRepositorio Universidad Nacional de Colombia
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818Article of journalPublished in 1985Repositorio Universidad Nacional de Colombia
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819Article of journalPublished in 1971Repositorio Universidad Nacional de Colombia
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820Article of journalPublished in 1998Repositorio Universidad Nacional de Colombia
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