Narcotic drugs, additional cooperative arrangements to curb illegal traffic : agreement between the United States of America and Mexico, amending the agreement of September 25 and October 10, 1984, effected by exchange of letters signed at Mexico April 2, 1985.
Washington, D.C. : Dept. of State : For sale by the Supt. of Docs., U.S. G.P.O., [1993?]