Plane and spherical trigonometry / 
Agnes Cenen E. Sarmiento...[and eight others]. 
 - Mandaluyong City :  Books Atbp. Publishing Corporation,  ©2009. 
 - vi, 155 pages ;  22 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9789710388776 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry, Plane.<br/>Trigonometry, Spherical.
<br/><br/><label>LC Class. No.: </label>QA531  / .P691 2009