Das, B.C. <br/><br/>
Higher trigonometry, B.C. Das, eng 

 - 28th ed 
 - Calcutta, U.N. Dhur, In  1996 
 - xiv,303p.  20cm 
<br/><br/><label>ISBN: </label>818562495X 
<br/><br/><label>Dewey Class. No.: </label>516.24,  / D, das