"Plane Trigonometry, " 
Plane Trigonometry 
 - 1st. Ed.  "xlvpp,;258p,;pbk" 
 - New Delhi  "New Age International (p) Limited , Publishers"  2017 
<br/><br/><label>ISBN: </label>9789385923487 
<br/><br/><label>Dewey Class. No.: </label>516.24 LON  / 22.516.24 LON