Barnett, Raymond A. <br/><br/>
Precalculus :   a graphing approach/ 
Raymond A. Barnett 
 - USA :   McGraw Hill,   c2000. 
 - xxxii, 839 pages :   illustrations ;   25cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0070057176 
<br/><br/><label>Dewey Class. No.: </label>Circ. 512.1 B259 2000