LEADER 01712oem 2200541 450 001 9910713787603321 005 20200722142332.0 035 $a(CKB)5470000002503804 035 $a(OCoLC)966435320 035 $a(EXLCZ)995470000002503804 100 $a20161219d1987 ua 101 0 $aeng 120 $aa|||||||||||| 121 $a||||||||| 124 $bd 135 $aurbn||||||||| 181 $ccri$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aGeneralized potentiometric surface of the aquifers in the Cockfield Formation, southeastern Arkansas, spring 1980 /$fby D.J. Ackerman 210 1$aLittle Rock, Arkansas :$cDepartment of the Interior, U.S. Geological Survey,$d1987. 215 $a1 online resource (1 map) 225 1 $aWater-resources investigations report ;$v87-4212 300 $aRelief shown by contours and spot heights. 300 $aIncludes index map, text, and hydrographs. 320 $aIncludes bibliographical references. 606 $aAquifers$zArkansas$vMaps 606 $aGroundwater$zArkansas$vMaps 606 $aAquifers$2fast 606 $aGroundwater$2fast 607 $aArkansas$2fast 608 $aMaps.$2fast 608 $aMaps.$2lcgft 615 0$aAquifers 615 0$aGroundwater 615 7$aAquifers. 615 7$aGroundwater. 702 $aAckerman$b D. J. 801 0$bCOP 801 1$bCOP 801 2$bOCLCO 801 2$bOCLCF 801 2$bOCLCA 801 2$bGPO 906 $aBOOK 912 $a9910713787603321 996 $aGeneralized potentiometric surface of the aquifers in the Cockfield Formation, southeastern Arkansas, spring 1980$93335982 997 $aUNINA