Roman, Steven <br/><br/>
The umbral calculus  / 

 - New York:  Dover,  2005 
 - x, 193p. Bibl. Index. 
<br/><br/> "Purchased under NBHM grant for the year 2005-2006" 
<br/><br/><label>ISBN: </label>0486441393 
<br/><br/><label>Dewey Class. No.: </label>515  / R758.UC