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|TC183-201||General preliminary operations. Dredging. Submarine building|
|TC203-380||Harbors and coast protective works. Coastal engineering. Lighthouses|
|TC401-506||River, lake, and water-supply engineering (General)|
|TC530-537||River protective works. Regulation. Flood control|
|TC601-791||Canals and inland navigation. Waterways|
|TC801-978||Irrigation engineering. Reclamation of wasteland. Drainage|