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035   $a(OCoLC)885009353
035   $a(EXLCZ)995470000002437382
100   $a20140731d1955      ua             0
101 0 $aeng
135   $aurn||||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aZinc-lead-copper resources and general geology of the upper Mississippi Valley district /$fby Allen V. Heyl [and three others]
210  1$a[Washington, D.C.] :$cUnited States Department of the Interior, Geological Survey,$d1955.
210  2$aWashington :$cUnited States Government Printing Office.
215   $a1 online resource (iii, 227-245 pages, 1 page of plate) $cillustrations, maps, charts
225 1 $aGeological Survey bulletin ;$v1015-G
225 1 $aA contribution to economic geology
300   $aTitle from title screen (viewed July 21, 2014).
300   $a"Prepared in cooperation with the Wisconsin Geological and Natural History Survey, the Illinois State Geological Survey, and the Iowa Geological Survey.
320   $aIncludes bibliographical references (pages 242-243) and index.
606   $aGeology$zMississippi River Valley
606   $aZinc mines and mining$zMississippi River Valley
606   $aLead mines and mining$zMississippi River Valley
606   $aCopper mines and mining$zMississippi River Valley
606   $aCopper mines and mining$2fast
606   $aGeology$2fast
606   $aLead mines and mining$2fast
606   $aZinc mines and mining$2fast
607   $aMississippi River Valley$2fast
615  0$aGeology
615  0$aZinc mines and mining
615  0$aLead mines and mining
615  0$aCopper mines and mining
615  7$aCopper mines and mining.
615  7$aGeology.
615  7$aLead mines and mining.
615  7$aZinc mines and mining.
700   $aHeyl$b Allen V$g(Allen Van),$f1918-2008,$01387333
712 02$aGeological Survey (U.S.),
712 02$aWisconsin Geological and Natural History Survey,
712 02$aIowa Geological Survey,
712 02$aIllinois State Geological Survey,
801  0$bCOP
801  1$bCOP
801  2$bOCLCO
801  2$bOCLCF
801  2$bTRAAL
801  2$bGPO
801  2$bSTF
801  2$bGPO
906   $aBOOK
912   $a9910704027503321
996   $aZinc-lead-copper resources and general geology of the upper Mississippi Valley district$93547356
997   $aUNINA