Word: aprils
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Dates: during 1920-1929
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...April 20, "The Law of the Air," by Judge S. B. Davis, of New York...
...April 3, "The Beginning of Radio and its Development up to the World War," by E. E. Bucher, assistant vice-president of the Radio Corporation of America...
...April 7, "The Principles of Radio Operation," by Professor H. G. Weber...
...April 16, "The Development of the Radio Art and Industry Since 1920 and its Relation to Other Industries," by David Sarnoff, vice-president and general manager of the Radio Corporation of America...
...April 17, "Research and Manufacturing in the Radio Art," by E. P. Edwards, manager of the Radio Department of the General Electric Company...