Morris, W.D. . Differential Equations For Engineers and Applied Scientists / Textual Documents W.D. Morris. - 1st ed. / - London : McGraw - Hill book company , C 1974. - 187p. : ill. ; 23cm . Index ISBN: PB Subjects--Index Terms: Mathematics Differential Equations PG-Mathematics Dewey Class. No.: 515.35 / M 831 D