Travers, Kenneth, et.al.,  c1990. <br/><br/>
Algebra 2 with Trigonometry / 
Travers, Kenneth, et.al. 
 - USA :  Glen,  c1990. 
 - 691p. :  illus. ;  25.4 cm. 
<br/><br/><label>ISBN: </label>0026507374