Gay, Harold J. <br/><br/>
Computation and trigonometry 
Harold J. Gay 
 - New York  Macmillan  1938 
 - various pages 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>516.24  / G285