Nrlund, Niels Erik, <br/><br/>
Vorlesungen uber Differenzenrechnung / 
Niels-Erik Norlund. 
 - Berlin :  J. Springer,  1924. 
 - ix, 551 p. : 
<br/><br/><label>ISBN: </label>GER5876 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential calculus.
<br/><br/><label>Dewey Class. No.: </label>515.33  / Vo