Wireless course in twenty lessons
By: by H.W. Secor, S. Gernsback, A. Lescarboura.
Contributors: Gernsback, Sidney, 1876-; Lescarboura, Austin C. 1891-
Publisher: The Electro Importing Co.
Published: 1912
Place of publication: New York
Language: eng
Number of pages: 160
Subjects: Telegraph, Wireless.