Saint Lawrence Seaway : tariff of tolls, agreements between the United States and Canada amending and supplementing the agreement of March 9, 1959, as amended and supplemented, effected by exchange notes signed at Washington, May 3, 1985, and exchange of notes signed at Washington, April 9 and 11, 1986.
Washington, D.C. : Dept. of State : For sale by the Supt. of Docs., U.S. G.P.O., [1992?]