Actions for Hearing--impaired : hearing before the Subcommittee on Communications of the Committee on Interstate and Foreign Commerce, House of Representatives, Ninety-sixth Congress, second session on H.R. 5022, a bill to amend the Communications Act of 1934 to provide that telephone receivers may not be sold in interstate commerce unless they are manufactured in a manner which permits their use by persons with hearing impairments, March 27, 1980