Coddington, Earl A. ; Levinson, Norman <br/><br/>
Theory of ordinary differential equations 
/ by Earl A. Coddington ; Norman Levinson 
 - New Delhi:  TATA McGraw Hill Publishing Company ltd.,  1972 
 - 429p. 
<br/><br/><label>ISBN: </label>9780070992566 
<br/><br/><label>Dewey Class. No.: </label>517.38  / COD/T