Narayanan, S. <br/><br/>
Trigonometry, S. Naraayanan, eng 

 - 9th 
 - Madras, S. Viswanathan, IN  1995 
 - 175p.  23 cm. 
<br/><br/><label>Dewey Class. No.: </label>516.24,  / D, nar