Salary and Wage Administration in the Federal Service: Hearings Before the Committee on Civil Service, United States Senate, Seventy-ninth Congress, First Session, on S. 807, a Bill to Improve Salary and Wage Administration in the Federal Service; to Provide Pay for Overtime for Night and Holiday Work; to Amend the Classification Act of 1923, as Amended; and for Other Purposes, April 25, 26, 27, 30, and May 2, 1945