Espiritu, Severino A <br/><br/>
College algebra and trigonometry :  workbook with tables / 
Severino A. Espiritu, Antonina C. Sta Maria, Lorina G. Salamat. 
 - Manila :  National Bookstore,  c1987. 
 - viii, 307 p. 
<br/><br/><label>ISBN: </label>971-084047-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra<br/>Trigonometry