| SP16 Generalized Geologic Map of Delaware, Postcard |
DGS Staff |
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| B19 Geology and Hydrology of the Cockeysville Formation Northern New Castle County, Delaware |
Plank, M.O., Woodruff, K.D., Werkheiser, W.H. |
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| OFR39 Basic Data for the Geologic Map of the Seaford Area, Delaware |
Andres, A.S., Ramsey, K.W., Schenck, W.S. |
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| RI33 Exploring, Drilling, and Producing Petroleum Offshore |
Spoljaric, N. |
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| SP9 Generalized Geologic Map of Delaware |
Pickett, T.E., Spoljaric, N., Jordan, R.R. |
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| GM 4 Geology of the Wilmington Area, Delaware |
Woodruff, K.D., Thompson, A.M. |
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