Chrestenson,H.E.  x <br/><br/>
Mappings of the plane.  Applications to trigonometry and complex numbers. 

 - x 
 - San Francisco.  Freeman,  1966 
 - 171 
<br/><br/>x 
<br/><br/><label>ISBN: </label>x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry Trigonometry. 
<br/><br/><label>Dewey Class. No.: </label>514/CHM