Mendis, D.L.O.
Annual sessions of the Sri Lanka Association for the advancement of science
Evolution and development of water and soil conservation ecosystems - from ancie
/ D L. O Mendis
- [S.l] Sri Lanka Pugwash Group 2001
- 92 p.
9559760505
Water conservation
Soil conservation-economic aspects
Irrigation farmaing-economic aspects
Ecosystems
333.913 / ANN