Villarmil, Ma. Mauricia L. <br/><br/>
Algebra and trigonometry. 
adapted for use in Philippine schools by Ma. Mauricia L. Villarmil, Raymundo A. Favilla, Richard E. Johnson from the original works of Lona Lee Lendsey, William E. Slesnick, Grace E. Bates. 
 - 3rd ed. 
 - Manila :  National Book Store,  1981. 
 - viii, 677 p. : ill. 
<br/><br/><label>ISBN: </label>9710820974 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra.<br/>Trigonometry.
<br/><br/><label>LC Class. No.: </label>QA 152.2   / .V54 1981