ජල පාරිභෝගික අත්පොත
Jala paaribogika athpotha
- Katugasthota Mahanuwara ha thadasanna jala sampadana vyapruthiya 2014
- 76p. : ill. (some col.), tables
9789554731011
WATER CONSUMPTION
WATER SUPPLY
WATER
RAIN AND RAINFALL
628.171 / S7
9789554731011
WATER CONSUMPTION
WATER SUPPLY
WATER
RAIN AND RAINFALL
628.171 / S7