நூலகம்> தேசிய கல்வி நிறுவகம்
(1982). School Sensus 1981. Colombo: Ministry of Education.
1982. School Sensus 1981. Colombo: Ministry of Education.
School Sensus 1981. Colombo: Ministry of Education. 1982.
Library Network, National Institute of Education (NIE) Maharagama