RI59 Bedrock Geology of the Piedmont of Delaware and Adjacent Pennsylvania |
Plank, M.O., Schenck, W.S., Srogi, L. |
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SP16 Generalized Geologic Map of Delaware, Postcard |
DGS Staff |
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SP20 Delaware Piedmont Geology |
Plank, M.O., Schenck, W.S. |
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RI56 The Setters Formation in the Pleasant Hill Valley, Delaware: Metamorphism and Structure |
Plank, M.O., Schenck, W.S. |
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SP19 Delaware: Its Rocks, Minerals, and Fossils |
DGS Staff |
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SP5 Geology and Earth Resources of Delaware |
DGS Staff |
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