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New theory of recharge to the artesian basin of the Dakotas

publication
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Geology of the Berne quadrangle, Black Hills, South Dakota

publication
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Preliminary outcrop map, Rochford and vicinity, Black Hills, South Dakota, showing locations and values of samples analyzed selectively for Au, As, and Cu

publication
image of publications layered on a wooden table

A preliminary report of a recently discovered aquifer at Sioux Falls, South Dakota

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