Christopher Natzén

The coming of sound film in Sweden 1928-1932 : new and old technologies  Christopher Natzén Häftad. Stockholm University, 2015-09-03 ISBN 9789176098509     The Coming of Sound Film in Sweden 1928-1932 New and Old Technologies  Christopher Natzén Häftad. Acta Universitatis Stockholmiensis, 2010-01 ISBN 9789186071455