Zakaria, Choudhury M G. <br/><br/>
Elements of Spherical Trigonometry/ 

 - Kushtia :  Liakat book.,  1968. 
 - 87 p. ;  21 cm.  00 tk. 
<br/><br/><label>Subjects--Index Terms: </label>Trigonometry 
<br/><br/><label>Dewey Class. No.: </label>514.6