Fleming, Walter. <br/><br/>
Plane trigonometry / 
Walter Fleming, Dale Varberg. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1980. 
 - xi, 212, various pagination :  ill. 
<br/><br/><label>ISBN: </label>0136790437 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plane trigonometry.