Kells, Lyman M. <br/><br/>
Plane and spherical trigonometry 

 - New York  McGraw-Hill  1943 
 - 400 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry
<br/><br/><label>Dewey Class. No.: </label>514.5  / K29P