https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Orpwood%2C%20Graham.%22&sort_by=title_az&format=rss 4 0 50 ISBN:9233025020 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=7797 ]]> By Orpwood, Graham.
Suiza : UNESCO, 1988 .
234 p. 9233025020

]]> Place hold on Ciencia y tecnología en la enseñanza primaria del mañana /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=7797 ISBN:9233025020 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=139547 ]]> By Orpwood, Graham.
París : UNESCO, 1988 .
234 p. 9233025020

]]> Place hold on Ciencia y tecnología en la enseñanza primaria del mañana /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=139547 ISBN:9231025023 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=136759 ]]> By Orpwood, Graham..
Paris : UNESCO, 1987 .
216 p. ; 9231025023

]]> Place hold on Science and technology in the primary school of tomorrow /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=136759 ISBN:9232025027 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=157671 ]]> By Orpwood, Graham..
Paris : UNESCO, 1987 .
216 p. ; 9232025027

]]> Place hold on Science et technique dans l´enseignement primaire de demain / Graham Orpwood; Ingvar Werdelin.

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=157671