PURL http://bibpurl.oclc.org/web/85324 URL http://bibpurl.oclc.org/maint/withdrawn.pl.cgi?/WEB/85324 Maintainers 100134868, CONSER Creation Date Tue Mar 13 15:08:05 2018 Last Modified Thu Mar 11 14:49:35 2021 Change Category User_Edited
Modified by 100134868 Modified Thu Mar 11 14:49:23 2021 Change Category User_Edited Reason for Change no longer available online URL http://bibpurl.oclc.org/maint/withdrawn.pl.cgi?/WEB/85324Modified by 100134868 Modified Tue Mar 13 15:08:05 2018 Change Category User_Entered Reason for Change no longer available online URL http://www.revistadelauniversidad.unam.mx/6217/mobile/num_ant07.html