Rathnayaka, Manoj <br/><br/>
සොබාදහමේ තුල්‍යතාව 
= sobaadhahamee thulYathaava 


 - Colombo:  Godage,  2001. 
 - 50p.;  21cm 
<br/><br/><label>ISBN: </label>955-20-4566-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General Science
<br/><br/><label>Dewey Class. No.: </label>500  / RAT