DGS Publications
| Title | Authors | Publication Date |
|---|---|---|
| GM17 Geologic Map of the Harbeson Quadrangle, Delaware | Ramsey, K.W., Tomlinson, J.L. | |
| B15 Digital Model of the Unconfined Aquifer in Central and Southeastern Delaware | Johnston, R.H. | |
| B14 Hydrology of the Columbia (Pleistocene) Deposits of Delaware: An Appraisal of a Regional Water-Table Aquifer | Johnston, R.H. |