TY  - GEN
AU  - Gunawardana, O.A.
AU  - Boteju, W.M.N.
AU  - Manchanayaka, P.
TI  - Irrigation engineering theory and design level 4 block 1: diploma in technology civil
U1  - 624 
CY  - Nugegoda
PB  - The Open University
KW  - CIVIL ENGINEERING
ER  -