Rainville, Earl D. and Bedient, Phillip E.  <br/><br/>
Elementary differential equations / 

 - 7th.  
 - New Delhi,  Macmillian Publishing,   c1981. 
 - xiii, 546p. ;  ill. ;  26 cm.  
<br/><br/><label>ISBN: </label>002946580x 
<br/><br/><label>LC Class. No.: </label>3049 
<br/><br/><label>Dewey Class. No.: </label>515.35