| 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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| 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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| OFR21 A Guide to Fossil Sharks, Skates, and Rays from the Chesapeake and Delaware Canal Area, Delaware |
Lauginiger, E.M., Hartstein, E.F. |
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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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