https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=se%2Cphr%3A%22New%20pathways%20in%20science%22&sort_by=title_az&format=rss 2 0 50 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=43227 By Craig, Gerald Spellman, | Baldwin, Sara E. .
Boston : Ginn and Company, 1940 .
295 páginas :

]]> Place hold on Our earth and sky

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=43227 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=58934 By Craig, Gerald Spellman,.
Boston, E.U.A. : Ginn, 1940 .
222 p. :

]]> Place hold on We find out /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=58934