Title: Khrōngkān sưksā phư̄a tham phǣn lak rō̜ngrap kānphatthanā lǣng nam læ prapprung khrōngkān chonprathān samrap phǣn ... 9
Description: Master plan for water resources development and rehabilitation of existing irrigation project : report on operation plan for four important river-basins each in the four regions of Thailand.