Niyogi,Pradip  <br/><br/>
Elementary Plane Trigonometry  
by Pradip Niyogi 
 - Calcutta   Bookland Private Limited  
 - 300p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510   / NIY