GM24 Geologic Map of the Millington, Clayton and Smyrna Quadrangles, Delaware |
Ramsey, K.W., Tomlinson, J.L. |
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GM14 Geologic Map of Kent County, Delaware |
Ramsey, K.W. |
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GM13 Geologic Map of New Castle County, Delaware |
Ramsey, K.W. |
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GM 8 Geology of the Milford and Mispillion River Quadrangles, Delaware |
Ramsey, K.W. |
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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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B14 Hydrology of the Columbia (Pleistocene) Deposits of Delaware: An Appraisal of a Regional Water-Table Aquifer |
Johnston, R.H. |
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