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Subject
- Groundwater[remove]69
- Water quality41
- Aquifers11
- Water7
- Water-supply6
- Wells6
- Land use4
- Drinking water3
- Organic water pollutants3
- Water chemistry3
- Geology, Stratigraphic2
- Groundwater flow2
- Stream measurements2
- Water table2
- Well water2
- Acid mine drainage1
- Artificial groundwater recharge1
- Coastal plains1
- Geochemistry1
- Gold mines and mining1