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1Article of journalPor Arango, Pablo R.Published in 1999Repositorio Repositorio Institucional U. Caldas
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2Article of journalPor Arango, Pablo R.Published in 1999Repositorio Repositorio U. de Caldas
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3Article of journalPor Arango, Pablo R.Published in 1999Repositorio Repositorio U. de Caldas
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4Article of journalPor Arango, Pablo R.Published in 1999Repositorio Repositorio Institucional U. Caldas
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5Article of journalPor Arango, Pablo R.Published in 1999Repositorio Repositorio Institucional U. Caldas
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