00260nam a2200109Ia 4500082002200000100002100022245005300043260002800096300001600124500000500140700000500145  a309.517bSt898.AT  aStratford, A. H.  aAir transport economics in the supersonic era.b  aLondonbMacmillanc1967  aviii, 355p.  a  a