Agnew, Ralph Palmer, 1900- Differential equations/ by Ralph Palmer Agnew. - 1st ed. - New York: London: McGraw-Hill Book Co., 1942. - vii, 341 p.: diagrs., 24 cm. LCCN: 42051155 Subjects--Topical Terms: Differential equations. Dewey Class. No.: 515.35 / A273d