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Horatio N. (Horatio Newton) Parker

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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
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