HART, William.L. <br/><br/>
College Algebra and Trigonometry 

 - 2nd ed 
 - Lexeigton  D.C Heath & company  1978 
 - xiv, 482p. 
<br/><br/><label>ISBN: </label>0-669-01460-5 
<br/><br/><label>Dewey Class. No.: </label>512.13