OFR54 Bedrock Geologic Map of the Delaware Piedmont |
Schenck, W.S. |
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SP28 Digital Elevation Model of Delaware |
Wang, L.T. |
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GM17 Geologic Map of the Harbeson Quadrangle, Delaware |
Ramsey, K.W., Tomlinson, J.L. |
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GM16 Geologic Map of the Fairmount and Rehoboth Beach Quadrangles, Delaware |
Ramsey, K.W. |
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GM15 Geologic Map of the Georgetown Quadrangle, Delaware |
Ramsey, K.W. |
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GM10 Bedrock Geologic Map of the Piedmont of Delaware and Adjacent Pennsylvania |
Schenck, W.S., Plank, M.O., Srogi, L. |
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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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OFR17 A Guide to Information on Benchmarks in Delaware |
Schenck, W.S. |
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OFR13 Delaware's Extractive Mineral Industry |
Doyle, R.G., Pickett, T.E. |
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B7 Engineering Materials of Northern New Castle County |
Ward, R.F., Groot, J.J. |
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