Great Britain. Post Office. (1916). Handbook for wireless telegraph operators, working installations licensed by His Majesty's postmaster-general: Revised in accordance with the radiotelegraph convention of London, 1912. J. Causton & Sons, Ltd..
MLA CitationGreat Britain. Post Office. Handbook for Wireless Telegraph Operators, Working Installations Licensed by His Majesty's Postmaster-general: Revised in Accordance with the Radiotelegraph Convention of London, 1912. J. Causton & Sons, Ltd., 1916.
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