Spiegel, Murray R. Applied differential equations / Murray R. Spiegel. - 2a ed. - Englewood : Prentice Hall, 1967 - 412 p. : il. ; 23 cm. - (Prentice-hall mathematics series) . Incluye índice Subjects--Topical Terms: Ecuaciones diferenciales LC Class. No.: QA371 / S65 1967