Author
Srī Laṅkā Maha Băṅkuva
2
Ceylon. Dept. of Census and Statistics
1
Ceylon. Dept. of Statistics
1
Ceylon. Janalēkhana hā Saṅkhyālēkhana Depārtamēntuva
1
Sri Lanka. Dept. of National Planning
1
Sri Lanka. External Resources Dept
1
Sri Lanka. Jātika Krama Sampādana Aṃśaya
1
Srī Laṅkā Maha Băṅkuva. Saṅkhyālēkhana Depārtamēntuva
1
University of Ceylon, Peradeniya
1
University of Peradeniya
1
University of Sri Lanka, Peradeniya Campus
1