Weeradundara, Sirisena <br/><br/>
කාල කළමනාකරණය 
 kala kalamanaakaranaya 

 -    1997 
 - 54p.,  19 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Time management
<br/><br/><label>Universal Decimal Class. No.: </label>651  / WEE