College algebra and trigonometry 
Johnston, Carol Lee. 
 -  Dellen Publishing Company.  1978 
 - xv, 715 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>0-89517-001-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra.
<br/><br/><label>Dewey Class. No.: </label>512.514 J64c 1978