Frequency modulation broadcasting : agreement between the United States of America and Mexico, amending the agreement of November 9, 1972, as amended, effected by exchange of notes, signed at Washington December 21, 1984 and March 18, 1985.
Washington, D.C. : Dept. of State : For sale by the Supt. of Docs., U.S. G.P.O., [1992?]