Ayres, Frank  1901-1994 <br/><br/>
Plane and spherical trigonometry :   :  inclueding 680 selved problen completely selved in detail 

 - New York :   Schaum,   [c.1954]. 
 - 207 páginas :   il. 
 - Outline Series Theory and Problems .
<br/><br/><label>Subjects--Topical Terms: </label><br/>TRIGONOMETRIA