https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=%28su%3A%22DEBER%22%29&sort_by=title_az&format=rss 3 0 50 ISBN:9684363591 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=95872 ]]> By Mora Ledesma, José Guadalupe de la.
México : Progreso, 1990 .
96 p. 9684363591

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=95872 ISBN:9567062020 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=109697 [Chile] : Universidad Metropolitana de Ciencias de la Educación, Centro de Estudios Clásicos, 2001 .
257 p. : 9567062020

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