Fabra, Norberto F.  <br/><br/>
Trigonometry for secondary schools / 
Norberto F. Fabra.  
 - Manila :  Fabra, N.F. Educational Books,   1985. 
 - viii, 273 pages :  illustration ;  22 centimeter. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry.
<br/><br/><label>Dewey Class. No.: </label>FIL 516.24 F11t 1985