VIRGINIA G. BALMEO  2012 <br/><br/>
WORKTEXT IN TRIGONOMETRY FOR COLLEGE FRESHMEN 
VIRGINA G. BALMEO 
 - MANILA  PURELY BOOKS  2012 
 - iii, 155 p.  Illustrations; reference  15 cm x 23 cm 
<br/><br/><label>ISBN: </label>9789719553045