Scientific and technical cooperation in the earth sciences : memorandum of understanding between the United States of America and the Hungarian People's Republic, signed at Reston and Budapest, January 6 and 20, 1984 and extending agreement, signed at Reston and Budapest, March 17 and April 21, 1986.
Washington, D.C. : Dept. of State : For sale by the Supt. of Docs., U.S. G.P.O., [1993?]