DGS Publications
| Title | Authors | Publication Date |
|---|---|---|
| RI58 The Pliocene and Quaternary Deposits of Delaware: Palynology, Ages, and Paleoenvironments | Groot, J.J., Jordan, R.R. | |
| RI50 Plant Microfossils of the Calvert Formation of Delaware | Groot, J.J. |
Geologic and hydrologic research and exploration for Delaware