நூலகம்> தேசிய கல்வி நிறுவகம்
(1982). Education and Productive Work. Colombo: Sri Lanka National Commission for UNESCO.
1982. Education and Productive Work. Colombo: Sri Lanka National Commission for UNESCO.
Education and Productive Work. Colombo: Sri Lanka National Commission for UNESCO. 1982.
Library Network, National Institute of Education (NIE) Maharagama