Elementary differential equations / Rainville, Earl D. (Earl David), 1907- Differential equations. QA371 .R29 1964 517.38 RAE "Chapters 1-19 appear under the title: A short course in differential equations, third edition ... 1964 ... Some material ... is from The Laplace transform: an introduction ... 1963." Includes bibliographical references. New York : Macmillan, c1964. c1964. 1964 Text xvi, 521 p. eng