Relation of nitrogen and phosphorus in ground water to land use in four subunits of the Potomac River Basin /
by Scott W. Ator and Janet M. Denis ; prepared as part of the National Water-Quality Assessment (NAWQA) Program.
|Main Author:||Ator, Scott W.|
|Related Names:||Denis, Janet M.|
Baltimore, Md. : U.S. Dept. of the Interior, U.S. Geological Survey ; 1997.
Nutrient pollution of water
Nutrient pollution of water /
Potomac River Region.
Nitrates > Nitrates / Environmental aspects > Nitrates / Environmental aspects / Potomac River Region.
Groundwater > Groundwater / Pollution > Groundwater / Pollution / Potomac River Region.
Shipping list no.: 97-0334-P.
vi, 26 p. :
col. ill., maps (some col.) ;
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