நூலகம்> தேசிய கல்வி நிறுவகம்
(1975). පස්වසරක සටහන්. : Ministry of Education.
1975. පස්වසරක සටහන්. : Ministry of Education.
පස්වසරක සටහන්. : Ministry of Education. 1975.
Library Network, National Institute of Education (NIE) Maharagama