Emergency medical services systems amendments of 1979 : hearing before the Subcommittee on Health and Scientific Research of the Committee on Labor and Human Resources, United States Senate, Ninety-sixth Congress, first session, on S. 497 ... February 28, 1979.
United States.Congress.Senate.Committee on Labor and Human Resources.Subcommittee on Health and Scientific Research.
Washington : U.S. Govt. Print. Off.,
1979.
Emergency medical services