Not only is an efficient reservation system a considerable convenience to passengers, but it enables the airlines themselves ... technology came into being after the war they were already using 3-letter location codes, 2-letter carrier codes, etc., anbsp;...
|Title||:||IATA and what it does|
|Author||:||J. W. S. Brancker|
|Publisher||:||Sijthoff & Noordhoff International Publishers - 1977|