https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=Provider%3ASEP%24bUNAM%2C&sort_by=title_az&format=rss 4 0 50 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=17675 México : SEP$bUNAM, Dirección General de Orientación Vocacional, 1984 .
189 p.

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=17675 ISBN:9682908353 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=28896 ]]> By Malda, Juan Manuel.
México : SEP$bUNAM, 1986 .
104 p 9682908353

]]> Place hold on Las huellas de la vida :

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=28896 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=45558 México : SEP$bUNAM, 1990 .
[Sin paginación]

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=45558 ISBN:9688008232 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=51550 México : SEP$bUNAM, Coordinación de Humanidades, 1982 .
II, 237 p. 9688008232

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