| RI55 Geology of the Milford and Mispillion River Quadrangles |
Ramsey, K.W., Groot, J.J. |
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| RI50 Plant Microfossils of the Calvert Formation of Delaware |
Groot, J.J. |
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| RI28 Well and Aquifer Tests, Laird Tract Well Field, Newark, Delaware |
Talley, J.H., Hahn, W.F. |
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| RI27 Ground-Water Investigations in the Delaware Piedmont for the City of Newark, 1976 |
Hahn, W.F. |
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| OFR9 Geologic Field Trips in Delaware |
Benson, R.N., Hahn, W.F., Jordan, R.R., Pickett, T.E., Talley, J.H., Thompson, A.M., Woodruff, K.D. |
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| RI11 An Evaluation of the Resistivity and Seismic Refraction Techniques in the Search for Pleistocene Channels in Delaware |
Bonini, W.E. |
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| RI8 Evaluation of the Water Resources of Delaware |
Baker, W.W., Varrin, R.D., Groot, J.J., Jordan, R.R. |
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| B3 Marine Upper Cretaceous Formations of the Chesapeake and Delaware Canal |
Organist, D.M., Richards, H.G., Groot, J.J. |
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| B2 Geology and Ground-Water Resources of the Newark Area, Delaware with a Section on the Surface Water Resources |
Groot, J.J., Rasmussen, W.C., Hulme, A.E. |
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