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1Article of journalPor Villalba Alvim, Maria Agostini de; Quintela, Gloria Fernandina; Cortés Camacho, Vicente; Sánchez González, José AntonioPublished in 1960Repositorio Universidad Nacional de Colombia
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2Article of journalPublished in 2004Repositorio Universidad Nacional de Colombia
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3BookPublished in 1996Repositorio Universidad Nacional de Colombia
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9Doctoral thesisPublished in 2021Repositorio Universidad Nacional de Colombia
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10Doctoral thesisPublished in 2021Repositorio Universidad Nacional de Colombia
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