Guterman, Martin M. Differential equations : a first course / Martin M. Guterman, Zbigniew H. Nitecki. - Philadelphia : Saunders College Pub., 1984. - xv, 590, 40, 6 p. : ill.; 24 cm. Includes bibliography and index. ISBN: 0030625025 Subjects--Topical Terms: Differential equations. LC Class. No.: QA371 / GUT 1984