Threshold test ban and peaceful nuclear explosion treaties : hearings before the Committee on Foreign Relations and the Subcommittee on Arms Control, Oceans and International Environment of the Committee on Foreign Relations ... Ninety-fifth Congress, first session on Executive N, 94th Cong., 2d sess., two treaties between the United States of America and the Union of Soviet Socialist Republics ... July 28, August 3, and September 8 and 15, 1977.