RI50 Plant Microfossils of the Calvert Formation of Delaware |
Groot, J.J. |
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RI48 Geologic And Hydrologic Studies of the Oligocene - Pleistocene Section near Lewes, Delaware |
Benson, R.N., Andres, A.S., Ramsey, K.W., Talley, J.H. |
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RI47 Ages of the Bethany, Beaverdam, and Omar Formations of Southern Delaware |
Groot, J.J., Ramsey, K.W., Wehmiller, J.F. |
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RI30 Ground-Water Levels in Delaware July, 1966 - December, 1977 |
Talley, J.H. |
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RI23 Cretaceous and Tertiary Section, Deep Test Well, Greenwood, Delaware |
Talley, J.H. |
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RI3 Wells for the Observation of Chloride and Water Levels in Aquifers that Cross the Chesapeake and Delaware Canal |
Rasmussen, W.C., Groot, J.J., Beamer, N.H. |
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RI2 High-Capacity Test Well Developed at the Air Force Base, Dover, Delaware |
Rasmussen, W.C., Groot, J.J., Depman, A.J. |
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B7 Engineering Materials of Northern New Castle County |
Ward, R.F., Groot, J.J. |
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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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