Richardson, C. H.  1890- <br/><br/>
An introduction to the calculus of finite differences / 
C. H. Richardson. 
 - New York :  Van Nostrand,  1954 
 - vi, 142 p. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus.<br/>Difference equations.
<br/><br/><label>Dewey Class. No.: </label>515.62  / RII 1954