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Drought-trigger ground-water levels in Chester County, Pennsylvania, for the period of record ending May 2006
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Effect of on-site wastewater disposal on quality of ground water and base flow
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Environmental setting, water budget, and stream assessment for the Broad Run Watershed, Chester County, Pennsylvania
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Occurrence of fecal-indicator bacteria and protocols for identification of fecal-contamination sources in selected reaches of the West Branch Brandywine Creek, Chester County, Pennsylvania
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