Abeydeera, Nilmini <br/><br/>
Coorcinate Geomentry 

 - 1st ed. 
 - Colombo  Samudra Book Publications   2019. 
 - 182p. 
<br/><br/><label>ISBN: </label>9789556808902 
<br/><br/><label>Dewey Class. No.: </label> / Abe