https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=Provider%3ACREA%3ASEP%2C&sort_by=title_az&format=rss 2 0 50 ISBN:9688540056 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=16129 ]]> By Altamirano, Ignacio Manuel,.
México : CREA : | SEP, 1984 .
272 p. , "Año Internacional de la Juventud, 1985" 9688540056

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=16129 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=56701 By Madrid Hurtado, Miguel de la,.
México : CREA:SEP, 1986 .
39 p.

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