Has radio sold goods in 1932?
By: A second inquiry conducted by Prof. Robert F. Elder of the Massachusetts institute of technology
Publisher: Columbia broadcasting system, inc.
Published: 1932
Place of publication: New York
Language: eng
Number of pages: 44
Other titles: Radio advertising's effectiveness.
Notes: In pocket inside front cover: A second measurement of radio advertising's effectiveness, by Prof. Robert F. Elder. xx, diagrs. [1932]