Levy, H.  1889- <br/><br/>
Finite difference equations / 
by H. Levy and F. Lessman 
 - London :  Sir Issac Pitman,  c1959 
 - vii, 278 p. :  ill. ;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> USD 37.60 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Difference equations
<br/><br/><label>Dewey Class. No.: </label>517.6