Solar power from satellites : hearings before the Subcommittee on Aerospace Technology and National Needs of the Committee on Aeronautical and Space Sciences, United States Senate, Ninety-fourth Congress, second session, January 19 and 21, 1976. - United States. Congress. Senate. Committee on Aeronautical and Space Sciences. Subcommittee on Aerospace Technology and National Needs (U.S. Govt. Print. Off., 1976)