Protocol relating to an amendment to the Convention on International Civil Aviation (article 83 bis) signed at Montreal on 6 October 1980 = Protocole portant amendement de la Convention relative à l'aviation civile internationale (article 83 bis) signé à Montréal le 6 octo 1984.
International Civil Aviation Organization.
Montreal, Quebec : International Civil Aviation Organization,
1984.
English, French, Russian, and Spanish.
Cover title.
Aeronautics
Air traffic rules, International.
Airspace (International law)