Boyce, William E. . Elementary differential equations and boundary value problems / by William E. Boyce and Richard C. Diprima. - 3rd ed / - New York : John Wiley & Sons, Inc. , 1965 - xiv, 582p, I-8 : ISBN: 0-471-83180-8 Subjects--Topical Terms: Differential equations Dewey Class. No.: B331 / K5;2