Extension of the phasing of postal rates : hearing before the Subcommittee on Energy, Nuclear Proliferation, and Federal Services of the Committee on Governmental Affairs, United States Senate, Ninety-sixth Congress, first session, on S. 1096, July 19, 1979.
United States.Congress.Senate.Committee on Governmental Affairs.Subcommittee on Energy, Nuclear Proliferation, and Federal Services.
Washington : U.S. Govt. Print. Off.,
1979.
Postal rates