Spiegel, Murray R. Applied differential equations [by] Murray R. Spiegel. - 2d ed. - Englewood Cliffs, N.J., Prentice-Hall [1967] - Prentice-Hall mathematics series . Bibliography: p. 365. LCCN: 67010753 Subjects--Topical Terms: Differential equations. LC Class. No.: QA371 / .S82 1967 Dewey Class. No.: 515/.35