Sumanasekera , Menike <br/><br/>
විශ්වයේ යොවුන් නියමුවෝ 
 Vishvaye Yovun Niyamuvo 

 - Nugegoda  Author  2000 
 -  160p., 21 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>psychology<br/>Success Mechanism
<br/><br/><label>Universal Decimal Class. No.: </label>159.9 SUM