Narcotic drugs, additional cooperative arrangements to curb illegal traffic : agreement between the United States of America and Mexico, amending the agreement of June 2, 1977, as amended, effected by exchange of letters, signed at Mexico December 22, 1987 and February 11, 1988.
Washington, D.C. : Dept. of State : For sale by the Supt. of Docs., U.S. G.P.O., [1993?]