Digital data sets describing principal aquifers, surficial geology, and ground-water regions of the conterminous United States

Open-File Report 99-77
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Abstract

Publication type Report
Publication Subtype USGS Numbered Series
Title Digital data sets describing principal aquifers, surficial geology, and ground-water regions of the conterminous United States
Series title Open-File Report
Series number 99-77
DOI 10.3133/ofr9977
Year Published 1999
Language ENGLISH
Publisher USGS,
Description illus., 10 refs
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