air publications Air navigation / publ. for information and guidance of all concerned by Command of the Air Council set of nautical tables for general navigational purposes / S.M. Burton Hughes' tables for sea and air navigation / compiled by L.J. Comrie treaty series Agreement between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of the United States of America concerning the … Air navigation : British empire edition / by P.V.H. Weems ; ed. by Arthur J. Hughes and P.F. Everitt
