https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=copydate%3A%221980%20%281986%20impr.%29.%22&sort_by=title_az&format=rss 4 0 50 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=34470 By Dieterich, Heinz,.
México : Ediciones de Cultura Popular : | UAM-Xochimilco, 1980 .
119 p.

]]> Place hold on Lecturas sobre el desarrollo del pensamiento científico /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=34470 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=54308 By García Cantú, Gastón,.
México : Era, 1980 .
514 p.

]]> Place hold on El socialismo en México :

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=54308 ISBN:9682408024 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=55688 ]]> México : Trillas : | UAM, 1980 .
164 p. 9682408024

]]> Place hold on Técnicas actuales de investigación documental /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=55688 ISBN:8470461559 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=199905 ]]> By Gosálbez Celdrán, Alfredo.
Bogotá : Cincel-Kapeluz, 1980 .
380 p. : 8470461559

]]> Place hold on Técnicas para el tratamiento psicopedagógico /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=199905