Willoughby, Stephen S. <br/><br/>
Real math / 
Stephen S. Willoughby. 
 - La Salle :  Open court,  c1981. 
 - 408 p. :  ill. 
<br/><br/><label>ISBN: </label>0896885127 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.
<br/><br/><label>LC Class. No.: </label>QA107  / .R43