Sri Lanka water resources development plan /
Sri Lanka.Vārimārga Depārtamēntuva.
Sri Lanka.Minindōru Depārtamēntuva.
[Colombo] : Survey Dept.,
1978, (repr. 1984).
Relief shown by spot heights. Depths shown by contours.
Wanting: Sheets 1, 3 & 4.
Water resources development