Ghosh, Devaprasad . <br/><br/>
Plane Trigonometry /  Textual Documents 
Devaprasad Ghosh. 
 - 1st ed. / 
 - Calcutta :  Modern Book Agency ,  1946. 
 - 290p. :  ill ;  19cm . 
<br/><br/><label>Subjects--Index Terms: </label>Mathematics Trigonometry G-Mathematics 
<br/><br/><label>Dewey Class. No.: </label>515.5  / G 346 P