Rees, Dorothy. <br/><br/>
Trigonometry / 
Dorothy Rees, Paul K. Rees. -- 
 - Quezon City :   Ken,  1965. 
 - 339 pages :  illustrations ;  23 cm 
<br/><br/> Include index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry.
<br/><br/><label>LC Class. No.: </label>QA531   / .R44 1968