Coxford, Arthur F. <br/><br/>
Trigonometry / 
Arthur F. Coxford. 
 - New York :  Harcourt Brace Jovanovich,  c1981. 
 - vi, 442 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0153593725 
<br/><br/><label>Dewey Class. No.: </label>514  / COX