Safeguards to radio communications service of ships. Hearing[s] before a subcommittee of the Committee on Commerce, United States Senate, Seventy-seventh Congress, first session, on H.R. 5074, an act to provide additional safeguards to the radio communications service of ships of the United States in the interest of national defense, and for other purposes ..., by United States Senate Committee on Commerce

Title:	Safeguards to radio communications service of ships. Hearing[s] before a subcommittee of the Committee on Commerce, United States Senate, Seventy-seventh Congress, first session, on H.R. 5074, an act to provide additional safeguards to the radio communications service of ships of the United States in the interest of national defense, and for other purposes ...
Author:	United States. Congress. Senate. Committee on Commerce
Note:	U.S. Govt. Print. Off., 1941

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Subject:	Radio operators -- United States
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