Hagin, Frank G. A first course in differential equations / [electronic resource] / Frank G. Hagin.. — Engelwood Cliffs, N.J. : : Prentice-Hall,, [1975]. — ix, 342 p. : : ill. ; 24 cm. Includes bibliographical references and index. ISBN: 0133183947 : $12.95 9780133183948 LCCN: 74022396 Nat. Bib. No.: GB75-29129 B7529129 Subjects--Topical Terms: Differential equations.Equacoes DiferenciaisÉquations diffĂ©rentielles.Differentialgleichung. Subjects--Index Terms: Differential equations LC Class. No.: QA371 / .H33 Dewey Class. No.: 515.3/5