Boyce, William E. <br/><br/>
Elementary differential equations and boundary value problems / 
William E. Boyce and Richard C. DiPrima. 
 - 4th ed. 
 - New York :  Wiley,  c1977. 
 - 652 p. in various pagings :  ill. ; 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0471093343 
<br/><br/><label>Subjects--Index Terms: </label>Differential equations  Boundary value problems 
<br/><br/><label>Universal Decimal Class. No.: </label>517.927  / BOY'69