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

 - Calcutta  U. N. Dhur  1933 
 - xvi, 270 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>  Mathematics<br/>  Trigonometry
<br/><br/><label>Dewey Class. No.: </label>516.24  / B136h 1933