https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Gonz%C3%A1lez%20Levet%2C%20Sergio%22&sort_by=title_az&format=rss 2 0 50 ISBN:9701842545 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=97024 ]]> By González Levet, Sergio.
México : SEP, Comisión Nacional de los Libros de Texto Gratuitos, 2000 .
159 p. : 9701842545

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=97024 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=34857 By González Levet, Sergio.
Jalapa : Punto y Aparte, 1980 .
163 p. :

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