| RI78 Subsurface Geology of the Area Between Wrangle Hill and Delaware City, Delaware |
Jengo, J.W., McLaughlin, P.P., Ramsey, K.W. |
|
| B20 Stratigraphy of the Post-Potomac Cretaceous-Tertiary Rocks of Central Delaware |
Benson, R.N., Spoljaric, N. |
|
| RI37 Stratigraphic Nomenclature of Nonmarine Cretaceous Rocks of Inner Margin of Coastal Plain in Delaware and Adjacent States |
Jordan, R.R. |
|
| OFR21 A Guide to Fossil Sharks, Skates, and Rays from the Chesapeake and Delaware Canal Area, Delaware |
Lauginiger, E.M., Hartstein, E.F. |
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| B9 Stratigraphy of the Sedimentary Rocks of Delaware |
Jordan, R.R. |
|
