United States foreign policy, hearings, 86th Congress, 2d session, on studies pursuant to S. Res. 336, 85th Cong., and S. Res. 31, 86th Cong. pt. 1. Possible nonmilitary scientific developments and their potential Impact on foreign policy problems of United States; Worldwide and domestic economic problems and their impact on foreign policy of United States; and United States foreign policy, Africa, Jan. 28-Mar. 16, 1960.