Communications Satellite Legislation: Hearings Before the Committee on Aeronautical and Space Sciences, United States Senate, Eighty-seventh Congress, Second Session, on S. 2650, a Bill to Amend the National Aeronautical and Space Act of 1958, as Amended, with Respect to Space Communication Facilities, and for Other Purposes; and S. 2814, a Bill to Provide for the Establishment, Ownership, Operation, and Regulation of Commercial Communications Satellite System, and for Other Purposes