Perera,Anura C <br/><br/>
විද්‍යා විජ්ජා 
= Viddaya Vijja 


 -  Vidura Publication,  1986. 
 - 109p.;  18cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Primary education (Elementary education)<br/>Science And Technology
<br/><br/><label>Dewey Class. No.: </label>372.35  / PER