| RI50 Plant Microfossils of the Calvert Formation of Delaware |
Groot, J.J. |
|
| RI47 Ages of the Bethany, Beaverdam, and Omar Formations of Southern Delaware |
Groot, J.J., Ramsey, K.W., Wehmiller, J.F. |
|
| HM3 Geohydrology of the Wilmington Area, Delaware |
Woodruff, K.D. |
|
| OFR18 A Numerical Indicator of Water Conditions for Northern Delaware |
Jordan, R.R., Woodruff, K.D. |
|
| OFR13 Delaware's Extractive Mineral Industry |
Doyle, R.G., Pickett, T.E. |
|
| HM2 Geohydrology of the Newark Area, Delaware |
Woodruff, K.D. |
|
