Boyce, William E. <br/><br/>
Elementary differential equations / 
William E. Boyce, Richard C. DiPrima. 
 - 9th ed. 
 - Hoboken, N.J. :  John Wiley & Sons,  2009. 
 - 400 p. :  ill. ;  26 cm. 
<br/><br/><label>ISBN: </label>9780470039403 (hbk.) :  RM227.97 9780470554913 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations.<br/>Differential equations--Problems, exercises, etc.