| RI78 Subsurface Geology of the Area Between Wrangle Hill and Delaware City, Delaware |
Jengo, J.W., McLaughlin, P.P., Ramsey, K.W. |
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| GM17 Geologic Map of the Harbeson Quadrangle, Delaware |
Ramsey, K.W., Tomlinson, J.L. |
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| RI52 Quality and Geochemistry of Ground Water in Southern New Castle County, Delaware |
Ferrari, M.J., Bachman, L.J. |
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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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| B10 Salinity of the Delaware Estuary |
Cohen, B., McCarthy, L.T. Jr. |
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