Airspace use for postal conveyor : hearing and markups before the Subcommittee on Economic Development and Regional Affairs and the Committee on the District of Columbia, House of Representatives, Ninety-fifth Congress, first session, on H.R. 7766 ... July 26 and Sept. 19, 1977.
United States.Congress.House.Committee on the District of Columbia.Subcommittee on Economic Development and Regional Affairs.
United States.Congress.House.Committee on the District of Columbia.
Washington : U.S. Govt. Print. Off.,
1977.
"Serial no. 95-11."
Postal service
Airspace (Law)