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Effects of engine emissions from high-speed civil transport aircraft a two-dimensional modeling stud

[Washington, D.C.] : National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division ; [Springfield, Va. : For sale by the National Technical Information Service], 1991. 1991

Jet shielding of jet noise

Simonich, John C. (John Charles), author.
Washington, DC : National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1986. 1986