Nørlund, Niels Erik,  1885- <br/><br/>
Vorlesungen über Differenzenrechnung. 

 - New York:  Chelsea,  1954. 
 - 551 p.;  22 cm. 
<br/><br/> Reprint of the 1924 ed. 
<br/><br/><label>LCCN: </label>56001592 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Difference equations.
<br/><br/><label>Dewey Class. No.: </label>515.45