NASA space communications program : hearings before the Subcommittee on Space Science and Applications of the Committee on Science and Technology, U.S. House of Representatives, Ninety-seventh Congress, first session, July 8, 9, 1981
United States.Congress.House.Committee on Science and Technology.Subcommittee on Space Science and Applications.
Washington USGPO
1981
No. 97-17
Astronautics