Britannica Lessons:Book X Mathematics:Trigonometry and statistics 

 - Newe York:  Encyclopedia Britannica,  2002. 
 - 95p.;  23cm 
<br/><br/><label>ISBN: </label>8171549446 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigometry<br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>516.24  / BRI