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ลำดับที่LC คำอธิบาย
1 Hydraulic engineering
2 Ocean engineering
3 Technical hydraulics
4 General preliminary operations. Dredging. Submarine building
5 Harbors and coast protective works. Coastal engineering. Lighthouses
6 River, lake, and water-supply engineering (General)
7 River protective works. Regulation. Flood control
8 Dams. Barrages
9 Canals and inland navigation. Waterways
10 Irrigation engineering. Reclamation of wasteland. Drainage
   [แสดง 10/10 รายการ]