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Hydrogeology, Water Quality, and Land Management in the Big Spring Basin, Clayton County, Iowa

出版	Iowa Geological Survey, 1983
URL	http://books.google.com.hk/books?id=CAVEHQmIe5cC&hl=&source=gbs_api

註釋

"The second phase of an assessment of groundwater quality in the karst-carbonate aquifers of NE Iowa." "Designed to provide a controlled assessment of a karst groundwater basin."