by Richard H. Coupe
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Concentrations and loads of nitrogen and...
Pesticide, nutrient, water-discharge and...
Water quality of the tidal Potomac River...
Water pollution
Full-scale study of sequencing batch rea...
Ground-water quality near an inactive la...
Ground-water flow and effects of agricul...
A Pennsylvania German Reader and Grammar
Hydrogeology of a biosolids-application ...