TY  - BOOK
TI  - ප්‍රගතිය, 1970 -1975
U1  - 333.913 
PY  - 1975///
CY  - Colombo
PB  - Ministry of Irrigation, Electricity and Highways
KW  - Economics
KW  - Water for irrigation
N1  - Text in Sinhala
ER  -