| 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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| OFR19 Regolith Thickness of the Delaware Piedmont |
Woodruff, K.D., Christopher, M.J. |
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| OFR18 A Numerical Indicator of Water Conditions for Northern Delaware |
Jordan, R.R., Woodruff, K.D. |
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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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| RI9 Ground-Water Levels in Delaware January, 1962 - June, 1966 |
Woodruff, K.D. |
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