Das, B C, <br/><br/>
Higher trigonometry  Textual Documents 
by B C Das, B N Mukherjee 
 - Throughly rev. 3rd ed. 
 - Calcutta  U. N. Dhur & Sons Pvt. Ltd.  2013 
 - x, 312pg:  19cm. 
<br/><br/><label>ISBN: </label>9789380673837 
<br/><br/><label>Subjects--Index Terms: </label>Mathematics Trigonometry G-Mathematics 
<br/><br/><label>Dewey Class. No.: </label>516.24