| RI58 The Pliocene and Quaternary Deposits of Delaware: Palynology, Ages, and Paleoenvironments |
Groot, J.J., Jordan, R.R. |
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| RI55 Geology of the Milford and Mispillion River Quadrangles |
Ramsey, K.W., Groot, J.J. |
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| RI53 Geology of the Seaford Area, Delaware |
Andres, A.S., Ramsey, K.W., Groot, J.J. |
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| OFR25 Saturated Thickness of the Columbia Formation in Southern New Castle County, Delaware |
Groot, J.J., Demicco, P.M., Cherry, P.J. |
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| OFR24 Saturated Thickness of the Water-Table Aquifer in Southern New Castle County, Delaware |
Demicco, P.M., Groot, J.J., Cherry, P.J. |
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| OFR26 Salinity Distribution and Ground-Water Circulation beneath the Coastal Plain of Delaware and the Adjacent Continental Shelf |
Groot, J.J. |
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| OFR23 Ground-Water Availability in Southern New Castle County, Delaware |
Groot, J.J., Demicco, P.M., Cherry, P.J. |
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| B11 Ground-Water Resources of Southern New Castle County Delaware |
Rima, D.R., Coskery, O.J., Anderson, P.W. |
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| RI6 Some Observations on the Sediments of the Delaware River South of Wilmington |
Jordan, R.R., Groot, J.J. |
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| RI3 Wells for the Observation of Chloride and Water Levels in Aquifers that Cross the Chesapeake and Delaware Canal |
Rasmussen, W.C., Groot, J.J., Beamer, N.H. |
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| RI2 High-Capacity Test Well Developed at the Air Force Base, Dover, Delaware |
Rasmussen, W.C., Groot, J.J., Depman, A.J. |
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| B7 Engineering Materials of Northern New Castle County |
Ward, R.F., Groot, J.J. |
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| B5 Sedimentary Petrology of the Cretaceous Sediments of Northern Delaware in Relation to Paleogeographic Problems |
Groot, J.J. |
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| B2 Geology and Ground-Water Resources of the Newark Area, Delaware with a Section on the Surface Water Resources |
Groot, J.J., Rasmussen, W.C., Hulme, A.E. |
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