Penney, David E. <br/><br/>
Perspectives in mathematics / 
David E. Penney 
 - California :  W.A. Benjamin,  c1972 
 - 349 p 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Perspectives.
<br/><br/><label>Dewey Class. No.: </label>510  / P654P