Ayres,Frank <br/><br/>
Schaum's Outline Series  Theory and problems of Differential Equations 

 - Singapore  Mcgraw-Hill Book company  1972 
 - 295p. 
<br/><br/><label>ISBN: </label>0070990069 
<br/><br/><label>Dewey Class. No.: </label>512.9434  / A99S