| GM27 Geologic Map of the Elkton, Saint Georges, and Delaware City Quadrangles, Delaware |
Tomlinson, J.L., Ramsey, K.W. |
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| GM26 Geologic Map of the Cecilton and Middletown Quadrangles, Delaware |
Tomlinson, J.L., Ramsey, K.W. |
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| GM23 Geologic Map of the Seaford West and Seaford East Quadrangles, Delaware |
Tomlinson, J.L., Ramsey, K.W., Andres, A.S. |
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| GM17 Geologic Map of the Harbeson Quadrangle, Delaware |
Ramsey, K.W., Tomlinson, J.L. |
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| RI47 Ages of the Bethany, Beaverdam, and Omar Formations of Southern Delaware |
Groot, J.J., Ramsey, K.W., Wehmiller, J.F. |
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| RI20 Nitrate Contamination of the Water-Table Aquifer in Delaware |
Miller, J.C. |
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| RI8 Evaluation of the Water Resources of Delaware |
Baker, W.W., Varrin, R.D., Groot, J.J., Jordan, R.R. |
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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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| B7 Engineering Materials of Northern New Castle County |
Ward, R.F., Groot, J.J. |
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| B6 The Water Resources of Northern Delaware |
Rasmussen, W.C., Groot, J.J., Martin, R.O.R., McCarren, E.F., Behn, V.C. |
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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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