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21Article of journalPublished in 2017Repositorio Repositorio Institucional UPN
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24Published in 2009Repositorio Repositorio UIS
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25Published in 2017Repositorio Repositorio Corporación Universitaria Americana
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26masterThesisPublished in 2019Repositorio Repositorio Universidad JaverianaGet full text
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32Article of investigationPublished in 2009Repositorio RIUCaC - Repositorio U. Católica
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38Trabajo de grado de pregradoPublished in 2021Repositorio Repositorio Institucional USTA
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