Lactuan, Leo L. <br/><br/>
Modern plane trigonometry / 
Leo L. Lactuan ; Imelda R. Lactuan, editor. 
 - Malabon City :  Jimczyville Publications,  c2016. 
 - iv, 302p. :  ill. ;  24cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>978-971-9676-26-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plane Trigonometry
<br/><br/><label>Dewey Class. No.: </label>GC 516.242 L151 2016  / 12793