Liepmann, Hans Wolfgang. Elements of gasdynamics / by H. W. Liepmann and A. Roshko. - New York : Wiley, c1957 [Printing 1967]. - xiv, 439 p. : illus. ; 23 cm. Includes index. Subjects--Topical Terms: Gas dynamics.Aerodynamics. Dewey Class. No.: 533.2 / LIE 1967