000 00398nam a2200133Ia 4500
005 20260716043823.0
080 _a10.05.01 C2771ch
245 _aChanges to the air traffic services requirements for air-ground and point-to-point communications
260 _bICAO
_a[Montreal]CA
_c1999
300 _a1 v. (various pagings)
583 _c7/10/07
_kJOYD
650 _aAIR TRANSPORT
942 _cM
_mC2771ch
999 _c54829
_d54829