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01222nam a22002777a 4500 001 617AC4062AF411DEB9750807A8D7520A 005 200904162106.0 008 940823s1987 vau b f000 0 eng d 035 $a (OCoLC)30992625 040 $a GPO $c GPO $d SILO $d SILO 074 $a 0830-H-14 (MF) 086 0 $a NAS 1.26:181609 100 1 $a Spence, Peter L. 245 1 $a Comparison of two transonic noise prediction formulations using the Aircraft Noise Prediction Program $h [microform] / $c Peter L. Spence. 260 $a Springfield, Va. : $b For sale by the National Technical Information Service, $a Springfield, Va. : $b For sale by the National Technical Information Service, $c 1987] 300 $a 1 v. 490 1 $a NASA contractor report ; $v 181609 500 $a Distributed to depository libraries in microfiche. 533 $a Microfiche. $b [Washington, D.C. : $c National Aeronautics and Space Administration, $d 1988] $e 1 microfiche. 650 0 $a Aircraft noise. 710 20 $a Langley Research Center. 830 0 $a NASA contractor report ; $v NASA CR-181609. 939 $a 3493511 941 $a 1 952 $l OVUX522 $d 20180119061913.0 956 $a http://locator.silo.lib.ia.us/search.cgi?index_0=id&term_0=617AC4062AF411DEB9750807A8D7520AInitiate Another SILO Locator Search