DGS Publications
| Title | Authors | Publication Date |
|---|---|---|
| B15 Digital Model of the Unconfined Aquifer in Central and Southeastern Delaware | Johnston, R.H. | |
| RI24 Relation of Ground Water to Surface Water in Four Small Basins of the Delaware Coastal Plain | Johnston, R.H. | |
| B14 Hydrology of the Columbia (Pleistocene) Deposits of Delaware: An Appraisal of a Regional Water-Table Aquifer | Johnston, R.H. |