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9941
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9942Published in 2011Repositorio Universidad Nacional de Colombia“... and frequencies expressed in percentages with confidence intervals, random sampling was performed systematized...”
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9943
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9944Trabajo de grado de pregradoPublished in 2016Repositorio Universidad Nacional de ColombiaGet full text
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9945
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9946
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9947Doctoral thesisPublished in 2015Repositorio Universidad Nacional de ColombiaGet full text
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9948Doctoral thesisPublished in 2017Repositorio Universidad Nacional de ColombiaGet full text
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9949
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9950
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9951
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9952
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9953
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9954
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9955Article of journalPublished in 2010Repositorio Universidad Nacional de ColombiaGet full text
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9956Article of journalPublished in 2018Repositorio Universidad Nacional de ColombiaGet full text
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9957Doctoral thesisPublished in 2015Repositorio Universidad Nacional de Colombia“... systematic study is relatively recent and so far, besides the United States, few countries have used, or even...”
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9958Article of journalPublished in 2016Repositorio Universidad Nacional de ColombiaGet full text
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9959
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9960
