Aviation : joint financing of certain air navigation services in Greenland and the Faroe Islands : agreement between the United States of America and other governments amending the agreement done at Geneva September 25, 1956, as amended, adopted by the Council of the International Civil Aviation Organization at Montreal March 17, 1976. (Dept. of State : for sale by the Supt. of Docs., U.S. Govt. Print. Off.,, 1977)