River and Canal Engineering, the characteristics of open flowing streams, and the principles and methods to be followed in dealing with them. — 4. Influence of Forests and Vegetation.—When the ground is covered with vegetation, and especially forests, the humus or

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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. 4. Influence of Forests and Vegetation.—When the ground is covered with vegetation, and especially forests, the humus or · ch 10/78

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