Leighton, Walter. <br/><br/>
Ordinary Differential Equations / 
Walter Leighton. 
 - 2nd ed. 
 - Belmont, California :  Wadsworth Publishing Co.,  c1966. 
 - ix, 246 p. :  ill. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/><label>Dewey Class. No.: </label>517.382  / LEI