Peterson, Gray L. <br/><br/>
Algebra and trigonometry 
Peterson, Gary L. 
 - Belmont:  Wadsworth,  1985. 
 - ix, 613p. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry
<br/><br/><label>Dewey Class. No.: </label>512.13  / PEA