RI58 The Pliocene and Quaternary Deposits of Delaware: Palynology, Ages, and Paleoenvironments |
Groot, J.J., Jordan, R.R. |
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SP17 The Delaware Geological Survey: The Formative Years, 1951-1969 |
Groot, J.J. |
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SP6 Correlation Chart of the Coastal Plain Units in New Jersey, Delaware, and Maryland |
Pickett, T.E. |
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RI14 Delaware Clay Resources |
Pickett, T.E. |
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B3 Marine Upper Cretaceous Formations of the Chesapeake and Delaware Canal |
Organist, D.M., Richards, H.G., Groot, J.J. |
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