A. O. Gelfond <br/><br/>
Calculus of finite differences / 
A. O. Gelfond 
 -  Hindustan Publishing Corp. Delhi 
 - 0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>515  / GELC