"United States. Civil Aeronautics Board." . . "United States. General Accounting Office." . . "United States." . . "Airlines Rates United States." . . . . . . . "Lower airline costs per passenger are possible in the United States and could result in lower fares : Civil Aeronautics Board : report to the Congress"@en . . . . . . . . . . . "Lower airline costs per passenger are possible in the United States and could result in lower fares Civil Aeronautics Board : report to the Congress"@en . . . . . . "Lower airline costs per passenger are possible in the United States and could result in lower fares, Civil Aeronautics Board : report to the Congress" . . "Airlines Rates." . . . .