Exploratory drilling for evidence of zinc and lead ore in Dubuque County, Iowa / by Arthur E. Flint and C. Ervin Brown.

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Main Author: Flint, Arthur E., 1913-
Corporate Author: Geological Survey (U.S.)
Other Authors: Brown, C. Ervin (Clarence Ervin), 1925-
Format: Government Document Book
Language:English
Published: Washington [D.C.] : U.S. G.P.O., 1956.
Series:Geological Survey bulletin ; 1027-K.
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