Foreign relations authorization act, fiscal years 1980 and 1981 : hearings before the Committee on Foreign Relations, United States Senate, Ninety-sixth Congress, first session on S. 586, a bill to authorize appropriations for the Department of State, International Communications Agency, and Board for International Broadcasting for fiscal years 1980 and 1981, and a supplemental authorization for State for fiscal year 1979, and for other purposes, March 28 and 29, 1979