Trench, William F., 1931- Elementary differential equations with boundary value problems [[Book] /] William F. Trench. - Pacific Grove, CA : Brooks/Cole-Thomson Learning, 2001. - xv, 736 p. : ill. ; 26 cm. Includes index. All Ages. ISBN: 0534263283 Subjects--Topical Terms: Differential equations.Boundary value problems. Dewey Class. No.: 515.35