De Silva, R.K.K.C.  <br/><br/>
වෙනස්වීම් කළමනාකරණය 9 
= wenaswima kaLamanakaranaya 9 


 - Maharagama:  NIE,  2004. 
 - ix,42p.;  20 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>School Education
<br/><br/><label>Dewey Class. No.: </label>371.2  / DES