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Record Nr. |
UNINA9910711649403321 |
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Autore |
Heyl Allen V (Allen Van), <1918-2008, > |
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Titolo |
Exploratory drilling in the Prairie du Chien group of the Wisconsin zinc-lead district by the U.S. Geological Survey in 1949-1950 / / by Allen V. Heyl, Jr., Erwin J. Lyons, and Allen F. Agnew. ; prepared in cooperation with the Wisconsin Geological and Natural History Survey |
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Pubbl/distr/stampa |
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Washington, D.C. : , : United States Department of the Interior, Geological Survey, , 1951 |
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Descrizione fisica |
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1 online resource (i, 35 pages) : illustrations, maps |
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Collana |
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Geological Survey circular ; ; 131 |
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Soggetti |
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Borings - Wisconsin |
Lead ores - Wisconsin |
Zinc ores - Wisconsin |
Borings |
Lead ores |
Zinc ores |
Wisconsin |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Nota di bibliografia |
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Includes bibliographical references (page 16). |
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