Todhunter, I. and Prasad, Gorakh <br/><br/>
Spherical Trigonometry 

 - 4 
 - Allahabad  Pothishala Private Limited  1952 
 - 76 
<br/><br/><label>Subjects--Personal Names: </label> Mathematics 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics