Chugh; Om.P.,Gupta;G.C, and Gupta;R.K. <br/><br/>
Text book of plane trignometry  English 

 - 4th.rev.ed. 
 - Delhi  Kautilya prakashan  1981 
 - 316 pg. 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>516.24 C7P