https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=copydate%3A%221971%20%282003%20impr.%29.%22&sort_by=title_az&format=rss 3 0 50 ISBN:9681802756 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=898 ]]> By Reyes Ponce, Agustín.
México : Limusa, 1971 .
156 p. : 9681802756

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=898 ISBN:9682401984 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=55637 ]]> By Holland, John L..
México : Trillas, 1971 .
138 p. 9682401984

]]> Place hold on Técnica de la elección vocacional :

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=55637 ISBN:9505184018 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=57495 ]]> By Maier, Henry W..
Buenos Aires : Amorrortu, 1971 .
358 p. 9505184018

]]> Place hold on Tres teorías sobre el desarrollo del niño :

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