Ghose, Ramesh Chandra <br/><br/>
Groundwork of trigonometry 
Ramesh Chandra Ghosh and Pramatha Nath Sengupta 
 - Calcutta  N. Sen 
 - 222p. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>516.24  / G427