Aviation, transport services : agreement of between the United States of America and Canada, amending the agreement of January 17, 1966, as amended and the agreement of August 21, 1984, effected by exchange of notes, signed at Ottawa December 13, 1990 and May 28, 1991.
Washington, D.C. : Dept. of State : For sale by the Supt. of Docs., U.S. G.P.O., [1993?]