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

 - Delhi  Lakshmi publications  1982 
 - 308pg 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>516.24 C48P