Environmental cooperation : annexes to the agreement of August 14, 1983, between the United States of America and Mexico, signed at San Diego July 18, 1985, and signed at San Diego July 18, 1985, and signed at Washington November 12, 1986, and signed at Washington January 29, 1987, and signed at Washington October 3, 1989.
Washington, D.C. : Dept. of State : For sale by the Supt. of Docs., U.S. G.P.O., [1992?]