https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=copydate%3A%221980%20%281990%20impr.%29%22&sort_by=title_az&format=rss 4 0 50 ISBN:8430611835 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=152645 ]]> By Erikson, Erik Homburger,.
Madrid : Taurus, 1980 .
284 p. 8430611835

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=152645 ISBN:9682408946 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=101012 ]]> By Munné, Frederic.
México : Trillas, 1980 .
206 p. 9682408946

]]> Place hold on Psicosociología del tiempo libre :

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=101012 ISBN:9500257173 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=57339 ]]> By Hubert, René,.
México : El Ateneo, 1980 .
xvii, 454 p. 9500257173

]]> Place hold on Tratado de pedagogía general /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=57339 ISBN:9684460139 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=170801 ]]> México : Hermes : | Sudamericana, 1980 .
319 p. 9684460139

]]> Place hold on La vida después de la muerte /

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