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Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in U.S. ground water used for drinking (simulation depth 50 meters) -- Input data set for glacial till (gwava-dw_gtil)

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This data set represents the presence or absence of poorly sorted glacial till east of the Rocky Mountains in the conterminous United States. The data set was used as...

本数据集表征美国本土落基山脉以东区域内分选不良冰碛物(glacial till)的存在与缺失分布情况。本数据集曾被用作

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