| SP16 Generalized Geologic Map of Delaware, Postcard |
DGS Staff |
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| SP19 Delaware: Its Rocks, Minerals, and Fossils |
DGS Staff |
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| RI32 Removal of Metals from Laboratory Solutions and Landfill Leachate by Greensand Filters |
Spoljaric, N., Crawford, W.A. |
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| SP7 Selected Fossil Collecting Locations in Delaware and Minerals in Delaware |
DGS Staff |
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| OFR5 Removal of Metallic Contaminants from Industrial Waste Waters by the Use of Greensands, A Preliminary Report |
Spoljaric, N., Crawford, W.A. |
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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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