Ayres, Frank  Dr.  1901-1994 <br/><br/>
Theory and problems of plane and spherical trigonometry /  
by Frank Ayres 
 - New York :   McGraw-Hill,   c1954 
 - 207 p. :   diagrs. ;   28 cm. 
 - Schaum's outline series .
<br/><br/> Incluye 680 problemas resueltos en detalle 
<br/><br/>Índice alfabético p.205 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TRIGONOMETRIA<br/>MATEMATICAS
<br/><br/><label>Universal Decimal Class. No.: </label>514.1/.6