TY  - BOOK
AU  - Royal Irrigation Department 
TI  - Phitsanulok Irrigation Project : Report on Bid  No. P.I.-1-2: Canals and structures - part 1
U1  - RID.631.7 
PY  - 1977///
CY  - Bangkok
PB  - ELC-NK-SEATEC
ER  -