Sparls, Fred W. <br/><br/>
Plane trigonometry 

 - 3rd 
 - New York  Prentice Hall  1952 
 - Varies 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometyr, plane
<br/><br/><label>Dewey Class. No.: </label>054.5  / SP26P3