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[null,"1.","Record Nr.",null,"UNINA9910711649403321"]
[null,null,"Autore",null,"Heyl Allen V (Allen Van), <1918-2008, >"]
[null,null,"Titolo",null,"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"]
[null,null,"Pubbl/distr/stampa",null,"Washington, D.C. : , : United States Department of the Interior, Geological Survey, , 1951"]
[null,null,"Descrizione fisica",null,"1 online resource (i, 35 pages) : illustrations, maps"]
[null,null,"Collana",null,"Geological Survey circular ; ; 131"]
[null,null,"Soggetti",null,"Borings - Wisconsin"]
[{"$nulls":4},"Lead ores - Wisconsin"]
[{"$nulls":4},"Zinc ores - Wisconsin"]
[{"$nulls":4},"Borings"]
[{"$nulls":4},"Lead ores"]
[{"$nulls":4},"Zinc ores"]
[{"$nulls":4},"Wisconsin"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","\"November 1951.\""]
[null,null,null,"Nota di bibliografia","Includes bibliographical references (page 16)."]