Minimum wage-hour legislation. Part 1, Hearings held in Washington, D.C., February 7, 25, 27; March 2, 4, 5, 6, 9, 10, 12, 13, 1964 : hearings before the General Subcommittee on Labor of the Committee on Education and Labor, House of Representatives, Eighty-eighth Congress, second session on H.R. 9824, a bill to amend the Fair Labor Standards Act to extend its protection to additional employees, and for other purposes