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200 1 $aRotary-wing aerodynamics$fW. Z. Stepniewski, C. N. Keys
210   $aNew York$cDover$d1984
215   $a1 v. (varie sequenze)$cill.$d24 cm
225 1 $aDover books on engineering
300   $aEd. inalterata in unico volume dell'ed. Science and technical information office of the National aeronautics and space administration, 1981, originalmente pubblicata in due volumi
300   $aContiene: Basic theories of rotor aerodynamics / by W. Z. Spepniewski . Performance prediction of helicopters / by C. N. Keys
676   $a629.132'3$v11 rid.$zita
700  1$aStepniewski,$bW. Z$0504131
701  1$aKeys,$bC. N$0504132
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996   $aRotary-wing aerodynamics$9810833
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