Birkler, J. L., 1944-, Development, acquisition, and operating and support cost methods for aircraft turbine engines / John L. Birkler, J.R. Nelson - 61 pages ; 28 cm. - The Rand paper series; P-6214 . - The Rand paper series; P-6214 . Subjects--Topical Terms: Airplanes--Turbojet engines Aircraft industry--Costs