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2. Protecting the nation's groundwater : EPA's strategy for the 1990s : the final report of the EPA Ground-Water Task Force
3. A preliminary assessment of the potential for artificial recharge in eastern Arkansas
4. Percentage change in saturated thickness of the High Plains aquifer, west-central Kansas, 1950 to average 1988-90
5. Potentiometric surface of the alluvial aquifer and hydrologic conditions near Gurabo and Juncos, Puerto Rico, March 1988
6. Potentiometric surface of the Aquia aquifer in southern Maryland during September 1988
7. Potentiometric surface of the Aquia aquifer in southern Maryland, September 1989
8. Potentiometric surface of the Magothy aquifer in southern Maryland during September 1988
9. Potentiometric surface of the Magothy aquifer in southern Maryland, September 1989
10. Potentiometric-surface map of the Coffee Sand aquifer in northeastern Mississippi, August through December 1987
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