Hearings Before the Subcommittee on Ocean Space of the Committee on Foreign Relations, United States Senate, Ninety-first Congress, First Session, on S. Res. 33, to Express the Sense of the Senate that the President Should Make All Necessary Efforts to Place Before the United Nations Committee on the Peaceful Uses of the Seabed and Ocean Floor Beyond the Limits of National Jurisdiction a Resolution Endorsing Basic Principles for Governing the Activities of Nations in Ocean Space, July 24, 25, 28, and 30, 1969