Exploratory drilling in the Prairie du Chien group of the Wisconsin zinc-lead district by the U.S. Geological Survey in 1949-1950

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Bibliographic Details
Author / Creator:	Heyl, Allen V. (Allen Van), 1918-2008, author.
Imprint:	Washington, D.C. : United States Department of the Interior, Geological Survey, 1951.
Description:	1 online resource (i, 35 pages) : illustrations, maps.
Language:	English
Series:	Geological Survey circular ; 131 Geological Survey circular ; 131.
Subject:	Borings -- Wisconsin. Lead ores -- Wisconsin. Zinc ores -- Wisconsin. Borings. Lead ores. Zinc ores. Wisconsin.
Format:	E-Resource U.S. Federal Government Document Book
URL for this record:	http://pi.lib.uchicago.edu/1001/cat/bib/11742410

Hidden Bibliographic Details
Other authors / contributors:	Agnew, Allen F., 1918-2012, author. Lyons, Erwin J., author. Geological Survey (U.S.), issuing body. Wisconsin Geological and Natural History Survey.
Notes:	"November 1951." Includes bibliographical references (page 16). Title from title screen (viewed July 15, 2015).
Other form:	Print version: Heyl, Allen V. (Allen Van), 1918-2008. Exploratory drilling in the Prairie du Chien group of the Wisconsin zinc-lead district by the U.S. Geological Survey in 1949-1950
GPO item no.:	0620-A (online)
Govt.docs classification:	I 19.4/2:131

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