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18681Article of journalPublished in 1968Repositorio Universidad Nacional de Colombia
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18682Article of journalPublished in 1991Repositorio Universidad Nacional de Colombia
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18683Article of journalPublished in 1970Repositorio Universidad Nacional de Colombia
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18684Article of journalPublished in 1978Repositorio Universidad Nacional de Colombia
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18685Article of journalPublished in 1990Repositorio Universidad Nacional de Colombia
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18686Work documentPublished in 2011Repositorio Universidad Nacional de Colombia
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18687Article of journalPublished in 1955Repositorio Universidad Nacional de Colombia
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18688Article of journalPublished in 1968Repositorio Universidad Nacional de Colombia
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18689Article of journalPublished in 1974Repositorio Universidad Nacional de Colombia
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18690Article of journalPublished in 1986Repositorio Universidad Nacional de Colombia
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18691Article of journalPublished in 1997Repositorio Universidad Nacional de Colombia
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18692Article of journalPublished in 1970Repositorio Universidad Nacional de Colombia
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18693Article of journalPublished in 1990Repositorio Universidad Nacional de Colombia
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18694Article of journalPublished in 1979Repositorio Universidad Nacional de Colombia
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18695Article of journalPor Nieto, José I.Published in 1968Repositorio Universidad Nacional de Colombia
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18696Article of journalPublished in 1968Repositorio Universidad Nacional de Colombia
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18697Article of journalPublished in 2000Repositorio Universidad Nacional de Colombia
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18698Article of journalPublished in 1997Repositorio Universidad Nacional de Colombia
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18699Article of journalPublished in 2002Repositorio Universidad Nacional de Colombia
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18700Article of journalPublished in 1994Repositorio Universidad Nacional de Colombia
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