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A Corn Field near a Well that was Sampled by USGS Scientists

By Environmental Health Program 2001 (approx.)
A corn field near a well that was sampled by USGS scientists for a reconnaissance of herbicide concentrations in Midwest groundw
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Detailed Description

A corn field near a well that was sampled by USGS scientists for a reconnaissance of herbicide concentrations in Midwest groundwater

Sources/Usage

Public Domain.