Hydrography of Virginia,

By Grover, Nathan Clifford,.
[Richmond, Va.] Pub. by Board of agriculture and immigration, 1906 .
3 p. l., [5]-233 p. , At head of title: Virginia Department of agriculture and immigration ... 24 cm..

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The Potomac River basin; geographic history--rainfall and stream flow--pollution, typhoid fever, and character of water--relation of soils and forest cover to quailty and quantity of surface water--effect of industrial wates of fishes.

By Parker, Horatio N..
Washington, Gov't print. off., 1907 .
vi, 364, iii p. 23 cm..

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Hydrography of Virginia,

The Potomac River basin; geographic history--rainfall and stream flow--pollution, typhoid fever, and character of water--relation of soils and forest cover to quailty and quantity of surface water--effect of industrial wates of fishes.