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Public
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Subject
Aquifers
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Subject
Geoscientific Information
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Subject
Groundwater
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Subject
Inland Waters
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Institution
Stanford
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Connecticut
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Year
2003
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1. Principal Aquifers of the 48 Conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands
2003. Geological Survey (U.S.). Water Resources Division. Wisconsin District. This polygon shapefile contains the shallowest principal aquifers of the conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islan... Geological Survey (U.S.).