Ayres, Frank. <br/><br/>
Schaum's outline of theory and problems of differential equations / 
Ayres Frank 
 - New York :  Schaum's Publications,  c1952. 
 - x, 293 p. :  ill. ;  28 cm. 
<br/><br/> Includes index.  Updated ed. of Schaum's outline of modern introductory differential equations. c1973. 
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<br/><br/><label>ISBN: </label>0070080194 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations.<br/>MCE
<br/><br/><label>Dewey Class. No.: </label>515.35  / AYR