Nørlund, Niels Erik,  1885- <br/><br/>
Vorlesungen über Differenzenrechnung / 
Niels Erik Norlund. 
 - New York :  Chelsea Pub. Co.,  1954. 
 - 551 p. ;  22 cm. 
<br/><br/> Reprint of the 1924 ed. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Difference equations.
<br/><br/><label>Dewey Class. No.: </label>517.38  / NOV 1954