by Peter B. McMahon
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In-situ bioremediation of nitrate-contam...
Water-quality assessment of the High Pla...
Vertical gradients in water chemistry an...
A reconnaissance study of the effect of ...
Water movement through thick unsaturated...
Nuclear waste
Hazardous waste
Snow Falling on Cedars
Pesticides
Status of ground-water resources at U.S....
Hydrologic data, 1964