Braverman, Harvey. <br/><br/>
Precalculus mathematics  algebra,trigonometry, analytic geometry 
by Harvey Braverman 
 - Baltimore  Williams and Wilkins Company  1975 
 - xi, 533p. 
<br/><br/><label>ISBN: </label>0683010131 
<br/><br/><label>Dewey Class. No.: </label>512.1  / N75