00814nam a2200205Ia 4500003000600000005001700006008004100023020001800064040002500082082003100107100004400138245006100182260002500243300002800268500004300296650006600339650008100405650005900486650006300545NORSU20240312015634.0240215s9999    xx            000 0 und d  a0-88878-233-0  aNORSU-DumcNORSU-Dum  a302.23 G982fourth edition  aGodfrey, David & Parkhill, Douglas, Ed. 0aGutenberg TwocBy: David Godfrey & Douglas Parkhill, Ed.  bPress Porcepicc1985  aviii, 187 pages, 23 cm.  aIncludes glossary and acknowledgements  aMass media-Social aspects-Canada-Addresses, essays, lectures.  aTechnological innovations-Social aspects-Canada-Addresses, essays, lectures.  aData transmission systems-Addresses, essays, lectures.  aCanada-Social conditions-1971/Addresses, essays, lectures.