Kells, Lyman M. <br/><br/>
Plane and Spherical Trigonometry:  with Tables. 

 - 3rd/ed. 
 - viii, 290p.,  illus., tables,  22cm. 
<br/><br/><label>ISBN: </label>9710819178 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry--New York--1951--newsprint