https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Otero%2C%20Alberto%22&sort_by=title_az&format=rss 2 0 50 ISBN:9879191242 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=37754 ]]> By Otero, Alberto.
Argentina : Novedades Educativas, 1998 .
219 p. 9879191242

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=37754 ISBN:9879191447 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=55261 ]]> By Otero, Alberto.
Argentina : Novedades Educativas, 1999 .
95 p. : 9879191447

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