AYRES, F. Theory and problems of differential equations Frank Ayres and adapted by J.C. Ault - SI ed. - New Work McGraw-Hill 1952 - 295p. ill. - Schaum's outline series . Contains:including over 1900 fully solved problems. ISBN: 0070990069 USD 2.95 Subjects--Topical Terms: DIFFERENTIAL EQUATIONPROLEMS & SOLUTIONS Dewey Class. No.: MATH 515.35076 / AFn81