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HELICOPTER AIR SERVICE PROGRAM 153 LOS ANGELES AIRWAYS INC. TON MILE OPERATING COST EXPERIENCE [[image - line graph showing Los Angeles Airway's ton mile operating cost experience from 1947 to 1964 and forecast until 1970]] LOS ANGELES AIRWAYS INC. NET SUBSIDY TO TOTAL REVENUES [[image - line graph showing Los Angeles Airway's net subsidy to total revenues from 1947 to 1964 and forecast to 1970]] 45-504-65-11