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21http://purl.org/coar/resource_type/c_18ccPublished in 2015Repositorio Expeditio: repositorio UTadeo
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22
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30http://purl.org/coar/version/c_b1a7d7d4d402bccePublished in 2012Repositorio Repositorio UIS
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31
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32Trabajo de grado de pregradoPublished in 2007Repositorio Repositorio UNAB
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33Published in 2021Repositorio Repositorio Uniatlantico
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34
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36Trabajo de grado de pregradoPublished in 2014Repositorio Repositorio Institucional UPN
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38Trabajo de grado de pregradoPublished in 2021Repositorio Repositorio Institucional UTP
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39Published in 2011Repositorio Universidad Nacional de Colombia
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40Article of journalPublished in 2010Repositorio Repositorio Universidad de Cartagena
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