B11 Ground-Water Resources of Southern New Castle County Delaware |
Rima, D.R., Coskery, O.J., Anderson, P.W. |
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RI7 An Invertebrate Macrofauna from the Upper Cretaceous of Delaware |
Shapiro, E., Richards, H.G. |
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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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B1 Ground-Water Problems in Highway Construction and Maintenance |
Rasmussen, W.C., Haigler, E.B. |
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