KELLS, LYMAN M. <br/><br/>
PLANE AND SPHERICAL TRIGONOMETRY:  ALTERNATE EDITION / 
LYMAN M. KELLS 
 - NEW YORK:   MCGRAW-HILL BOOK COMPANY;  1943. 
 - 400 p.              24 cm. 
<br/><br/>Incluye referencias bibliográficas 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TRIGONOMETRIA
<br/><br/><label>LC Class. No.: </label>QA531   / K45