Salvadori, Mario George, 1907- Differential equations in engineering problems, by Mario G. Salvadori and Ralph J. Schwarz. - New York : Prentice-Hall, 1954.[printing1958] - 432 p. : ill. ; 22 cm. Includes index. Subjects--Topical Terms: Differential equations. Dewey Class. No.: 517.38 / SAD