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Contributions to the hydrology of the United States 1927. Nathan C. Grover, chief hydraulic engineer.
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Experimental bacterial and chemical pollution of wells via ground water, and the factors involved, by C.W. Stiles, H.R. Crohurst, and Gordon E. Thomson. Report on the geology and ground water hydrology of the experimental area of the United States Public Health Service at Fort Caswell, N.C. by Norah Dowell Stearns.
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Thermal springs in the United States
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