| GM10 Bedrock Geologic Map of the Piedmont of Delaware and Adjacent Pennsylvania |
Schenck, W.S., Plank, M.O., Srogi, L. |
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| GM 7 Geology of the South-Central Kent County Area, Delaware |
Pickett, T.E., Benson, R.N. |
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| GM 6 Geology of the Dover Area, Delaware |
Pickett, T.E., Benson, R.N. |
|
| GM 5 Geology of the Smyrna-Clayton Area, Delaware |
Pickett, T.E., Benson, R.N. |
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| GM 2 Geology of the Middletown-Odessa Area, Delaware |
Pickett, T.E., Spoljaric, N. |
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| GM 1 Geology of the Chesapeake and Delaware Canal Area, Delaware |
Pickett, T.E. |
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