https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=copydate%3A%221997%20%282001%20impr.%29.%22&sort_by=title_az&format=rss 3 0 50 ISBN:9682320984 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=37478 ]]> By Nunes, Terezinha.
México : Siglo XXI, 1997 .
306 p. : 9682320984

]]> Place hold on Las matemáticas y su aplicación :

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=37478 ISBN:9684067232 | 9701821203 (SEP) https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=82320 ]]> By Sagan, Carl,.
México : Planeta, 1997 .
493 p. 9684067232 | 9701821203 (SEP)

]]> Place hold on El mundo y sus demonios :

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=82320 ISBN:9682002436 (Cruz O) | 9701866835 (CONACULTA) https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=86903 By Brun, Jean.
México : CONACULTA : | Cruz O., 1997 .
142 p. 9682002436 (Cruz O) | 9701866835 (CONACULTA)

]]> Place hold on Platón y la academia /

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