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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OFR18 A Numerical Indicator of Water Conditions for Northern Delaware |
Jordan, R.R., Woodruff, K.D. |
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OFR13 Delaware's Extractive Mineral Industry |
Doyle, R.G., Pickett, T.E. |
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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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