Dahiya; R.S.,Gupta;A.D. <br/><br/>
Book on higher trigonometry  English 

 - Delhi  Laxmi  publications  1985 
 - 165pg 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>516.24 D363H