Simmons, George Finlay, Differential equations, with applications and historical notes : with applications and historical notes - 2nd ed. - New Delhi Tata McGraw-Hill Publishing 1991 - xxi, 629 p. : illus.; 24 cm. - International series in pure and applied mathematics . 2nd ed., International ed. Includes bibliographical references. ISBN: 9780070530713 Subjects--Topical Terms: Differential equations. Dewey Class. No.: 515.35 SIM (2)