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2. Nitrate in the Columbia aquifer, central Delmarva Peninsula, Maryland
3. Cost-effectiveness of the stream-gaging program in Maryland, Delaware, and the District of Columbia
4. The Potentiometric surface of the Magothy Aquifer in southern Maryland, September 1985
5. Water levels, chloride concentrations, and pumpage in the coastal aquifers of Delaware and Maryland
6. Potentiometric surface of the Aquia aquifer in southern Maryland during the fall of 1987
7. Potentiometric surface of the Magothy aquifer in southern Maryland during the fall of 1987
8. The difference between the potentiometric surfaces of the Aquia aquifer of September 1986 and September 1988 in southern Maryland
9. Floods in West Virginia, Virginia, Pennsylvania, and Maryland, November 1985
10. Potentiometric surface of the Aquia aquifer in southern Maryland during September 1988
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