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Bibliographic Details
Main Author:	Pablo Andrés Nieto Ortiz
Format:	Article
Language:	English
Published:	Universidad Pedagógica Nacional 2013-12-01
Series:	Folios
Online Access:	http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0123-48702013000200008&lng=en&tlng=en

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