https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Escobar%20Valenzuela%2C%20Gustavo%2C%22&sort_by=title_az&format=rss 3 0 50 ISBN:9688634166 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=114926 ]]> Puebla : UAP, 2000 .
159 p. : 9688634166

]]> Place hold on Filosofía I :

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=114926 ISBN:9688632856 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=114927 ]]> Puebla : UAP, 1998 .
157 p. : 9688632856

]]> Place hold on Filosofía II :

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=114927 ISBN:9681843711 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=89031 ]]> By Escobar Valenzuela, Gustavo.
México : Limusa, 2001 .
147 p. : , "Area : ciencias sociales" 9681843711

]]> Place hold on Introducción al pensamiento filosófico en México /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=89031