River and Canal Engineering, the characteristics of open flowing streams, and the principles and methods to be followed in dealing with them. — 3. Training Works.—The object of the upstream and downstream protections already described (Chap. X.) is to prevent dama

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River and Canal Engineering, the characteristics of open flowing streams, and the principles and methods to be followed in dealing with them. 3. Training Works.—The object of the upstream and downstream protections already described (Chap. X.) is to prevent dama · ch 56/78

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