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1Article of journalPublished in 2013Repositorio Universidad Nacional de Colombia
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2Article of journalPublished in 2013Repositorio Universidad Nacional de Colombia
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3Article of journalPublished in 1986Repositorio Universidad Nacional de Colombia
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4Article of journalPublished in 2001Repositorio Universidad Nacional de Colombia
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5BookPor Ortiz Sarmiento, Carlos Miguel; Tovar Zambrano, Hermes; Medina Pineda, Medófilo; Archila Neira, Mauricio; Tovar Zambrano, Bernardo; Topolski, JerzyPublished in 1997Repositorio Universidad Nacional de Colombia
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6Article of journalPublished in 2007Repositorio Universidad Nacional de Colombia
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