https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Clark%2C%20Ronald%22&sort_by=title_az&format=rss 4 0 50 ISBN:968409051X https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=142845 ]]> By Clark, Ronald W..
México : Libros para todos, 2006 .
239 p. : , "Tomas Alva Edison la pintoresca e intrigante vida del hombre que inventó el futuro" 968409051X

]]> Place hold on Edison :

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=142845 ISBN:9688230456 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=27440 ]]> By Clark, Ronald W..
México : CONACYT, Publicaciones Científicas, 1979 .
299 p. : 9688230456

]]> Place hold on Hazañas científicas de nuestro tiempo :

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=27440 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=93958 Navarra, Esp. : Salvat, 1971 .
129 p. :

]]> Place hold on El hombre y la tierra /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=93958 ISBN:8434581671 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=102709 ]]> By Clark, Ronald.
Barcelona, Esp. : Salvat, 1985 .
175 p. : 8434581671

]]> Place hold on Russell /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=102709