In the matter of aural broadcasting on frequencies above 25,000 K.C.
Subtitle: (An inquiry into the possibilities of frequency and amplitude modulation) Brief for Radio corporation of America
By: Manton Davis, Frank W. Wozencraft, attorneys for Radio corporation of America ... April 22, 1940
Published: 1940
Place of publication: Washington?]
Language: eng
Number of pages: 24
Other titles: Before the Federal communications commission, Washington, D.C. Docket no. 5805
Notes: Cover-title.