Ayres, Frank. <br/><br/>
Theory and problems of plane and spherical trigonometry 

 - New York :  Schaum,  1954 
 - 207 p 
 - Schaum's outline series .
 - Schaum's outline series .
<br/><br/><label>LCCN: </label>23193 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometría.
<br/><br/><label>Dewey Class. No.: </label>514  / A97