Inspection and Regulation of Train-dispatching Service: Hearings Before a Subcommittee of the Committee on Interstate Commerce, United States Senate, Seventy-ninth Congress, Second Session, on S. 1538, a Bill to Promote the Safety of Railroad Employees and Travelers on Railroads, and to Promote Efficiency of Railroad Operation by Providing for Inspection and Investigation of Conditions Under which Train-dispatching Service May be Performed, and for the Promulgation of Rules and Regulations Governing Such Conditions. April 15, 16, and 17, 1946

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