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2. Underground aqueducts handbook
3. Underground storage tank program : hearing before the Subcommittee on Transportation and Hazardous Materials of the Committee on Energy and Commerce, House of Representatives, One Hundred Second Congress, first session, March 20, 1991
4. Underground storage tanks : hearing before the Subcommittee on Energy and Agriculture of the Committee on Small Business, House of Representatives, One Hundredth Congress, first session, Washington, DC, November 18, 1987
5. Underground storage tanks and open dumps on Indian reservations : oversight hearing before the Subcommittee on Native American Affairs of the Committee on Natural Resources, House of Representatives, One Hundred Third Congress, first session ... hearing held in Washington, DC, October 14, 1993
6. Underground storage tanks and open dumps on Indian reservations : oversight hearing before the Subcommittee on Native American Affairs of the Committee on Natural Resources, House of Representatives, One Hundred Third Congress, first session ... hearing held in Washington, DC, October 14, 1993
7. Underground storage tanks and open dumps on Indian reservations : oversight hearing before the Subcommittee on Native American Affairs of the Committee on Natural Resources, House of Representatives, One Hundred Third Congress, first session on abandoned and leaking underground storage tanks and open dump sites on Indian reservations : hearing held in Washington, DC, October 14, 1993
8. Underground water
9. The underground water resources of Alabama
10. Underground water resources of Long Island, New York
11. Underground waters and subsurface temperatures of the Woodbine sand in northeast Texas
12. Understanding and managing the effects of groundwater pumping on streamflow
13. Unintended consequences of biofuels production : the effects of large-scale crop conversion on water quality and quantity
14. An update of hydrologic conditions and distribution of selected constituents in water, eastern Snake River Plain Aquifer and perched groundwater zones, Idaho National Laboratory, Idaho, emphasis 2009-11
15. An update of hydrologic conditions and distribution of selected constituents in water, Snake River Plain aquifer and perched groundwater zones, Idaho National Laboratory, Idaho, emphasis 2006-08
16. Update of the accounting surface along the lower Colorado River
17. An update of the distribution of selected radiochemical and chemical constituents in perched ground water, Idaho National Laboratory, Idaho, emphasis 1999-2001
18. Updated study reporting levels (SRLs) for trace-element data collected for the California Groundwater Ambient Monitoring and Assessment (GAMA) Priority Basin Project, October 2009-March 2013
19. Updated study reporting levels (SRLs) for trace-element data collected for the California Groundwater Ambient Monitoring and Assessment (GAMA) Program Priority Basin Project, October 2009-October 2018
20. Updating data inputs, assessing trends, and evaluating a method to estimate probable high groundwater levels in selected areas of Massachusetts
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