Batacan, AT EL <br/><br/>
Plane trigonometry (text and workbook) / 
Batacan, AT EL  
 - Mandaluyong City  National Book Store  2001 
 - viii, 265p.; ill.; 25cm 
<br/><br/><label>ISBN: </label>9710862006 9710862006 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry