SPIEGEL, M. R <br/><br/>
CALCULUS OF FINITE DIFFRENCES AND DIFFERENCE EQUATIONS 

 - NEWYORK  MCGRAW HILL  1971 
 - 259P 
<br/><br/><label>ISBN: </label>07-060218-2 
<br/><br/><label>Dewey Class. No.: </label>515.33 SPI'C