HART, William L. : WAITS, Bert K <br/><br/>
College algebra and trignometry 

 - 2nd ed. 
 -  Lexington, Mass : D.C. Heath  1978 
 - 482 p. 
<br/><br/><label>ISBN: </label>0000669014605 
<br/><br/><label>Dewey Class. No.: </label>512  / H16