Research and development into electronic mail concepts by the USPS : briefing before the Subcommittee on Postal Personnel and Modernization of the Committee on Post Office and Civil Service, House of Representatives, Ninety-fifth Congress, first session, March 21, 1977.
United States.Congress.House.Committee on Post Office and Civil Service.Subcommittee on Postal Personnel and Modernization.
Washington : U.S. Govt. Print. Off.,
1977.
"Serial no. 95-45."
United States Postal Service.
Postal service