Ronald Clark, Sir Edward Appleton (Book Review) - GILLMOR, C. STEWART (Periodicals Archive Online (PAO), 1972)
http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:5129-1972-013-04-000033
Keywords: ZG