Military missions : agreement between the United States of America and Liberia amending and extending the agreement of January 11, 1951, as amended and extended, effected by exchange of notes dated at Monrovia April 22,and May 5, 1987.
Washington, D.C. : Dept. of State : For sale by the Supt. of Docs., U.S. G.P.O., 1993.