Global air traffic management operational concept.
International Civil Aviation Organization.
[Montreal, Que.] : International Civil Aviation Organization,
c2005.
"Approved by the Secretary General and published under his authority."
Updated by amendments, supplements, and corrigenda.
Issued also in Arabic, Chinese, French, Russian, and Spanish.
"Doc 9854 AN/458."
International Civil Aviation Organization
Air traffic control
Air traffic rules, International.
Aeronautics, Commercial