Robert E. Moyer, Frank Ayers, Jr. <br/><br/>
Schaum's outline trigeometry 

 - c.1 
 - USA  McGrawhill Education  2018 
 -  c.1 .
<br/><br/><label>ISBN: </label>9781260011487 
<br/><br/><label>Dewey Class. No.: </label>Cir.516.24/M87t/2018/c.1  / 5152