https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Pe%C3%B1a%20Ramos%2C%20Jorge%22&sort_by=title_az&format=rss 2 0 50 ISBN:9789582008994 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=166211 ]]> By Peña Ramos, Jorge.
Bogotá : Magisterio, 2009 .
116 p. : 9789582008994

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=166211 ISBN:9582005513 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=85489 ]]> By Peña Ramos, Jorge.
Santa Fé de Bogotá : Magisterio, 2000 .
163 p. : 9582005513

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