RI60 Geochemistry of the Mafic Rocks, Delaware Piedmont and Adjacent Pennsylvania and Maryland: Confirmation of Arc Affinity |
Plank, M.O., Srogi, L., Schenck, W.S., Plank, T.A. |
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SP16 Generalized Geologic Map of Delaware, Postcard |
DGS Staff |
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B19 Geology and Hydrology of the Cockeysville Formation Northern New Castle County, Delaware |
Plank, M.O., Woodruff, K.D., Werkheiser, W.H. |
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SP19 Delaware: Its Rocks, Minerals, and Fossils |
DGS Staff |
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SP7 Selected Fossil Collecting Locations in Delaware and Minerals in Delaware |
DGS Staff |
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SP5 Geology and Earth Resources of Delaware |
DGS Staff |
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SP2 Long-Range Plan for Water Resources Investigations in Delaware |
DGS Staff |
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SP1 The Story of Your State Geological Survey's Search for Water |
DGS Staff |
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