Earl W. Swokowski, Jeffery A. Cole <br/><br/>
Precalculus functions and grapths 

 - c.1 
 - USA  Cengage  2017 
 -  c.1 .
<br/><br/><label>ISBN: </label>9781305663091 
<br/><br/><label>Dewey Class. No.: </label>Cir.515/S7p/2017/c.1  / 5150