https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Hummel%2C%20Charles%22&sort_by=title_az&format=rss 5 0 50 ISBN:8482703196 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=17628 ]]> By Hummel, Charles.
Colombia : Voluntad, 1978 .
205 p. : 8482703196

]]> Place hold on La educación hoy frente al mundo del mañana /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=17628 ISBN:9232014602 (Voluntad) https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=129421 ]]> By Hummel, Charles.
París : | Colombia : UNESCO ; | Voluntad, 1977 .
205 p. : 9232014602 (Voluntad)

]]> Place hold on La Educación hoy frente al mundo del mañana /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=129421 ISBN:9231014609 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=18514 ]]> By Hummel, Charles.
Switzerland : UNESCO, 1977 .
200 p. 9231014609

]]> Place hold on Education today for the world of tomorrow /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=18514 ISBN:9231014609 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=129485 ]]> By Hummel, Charles.
París : UNESCO : | Genéve : | International Bureau of Education, 1977 .
200 p. : 9231014609

]]> Place hold on Education today for the world of tomorrow /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=129485 ISBN:9232014602 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=129490 ]]> By Hummel, Charles.
París : UNESCO ; | Genéve : | Bureau International d'Éducation, 1977 .
208 p. : 9232014602

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