LEADER 01765nem 2200517 450 001 9910713527003321 005 20200529162658.0 035 $a(CKB)5470000002502396 035 $a(OCoLC)1155889059 035 $a(EXLCZ)995470000002502396 100 $a20200529d1980 ua 101 0 $aeng 120 $aa|||||||||||| 121 $a||||||||| 124 $bd 135 $aur||||||||||| 181 $ccri$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aPotentiometric surface maps of the Sparta Sand ; northern Louisiana and southern Arkansas,1900, 1965, 1975, and 1980 /$fby G.N. Ryals 210 1$a[Reston, Va.] :$cDepartment of the Interior, United States Geological Survey,$d1981. 215 $a1 online resource (1 map) 225 1 $aOpen-file report ;$v80-1180 300 $aRelief shown by contours and spot heights. 300 $aIncludes location map and 3 ancillary maps. 517 1 $aPotentiometric maps of the Sparta Sand ; northern Louisiana and southern Arkansas, 1900, 1965, 1975, and 1980 606 $aGroundwater$zArkansas$vMaps 606 $aGroundwater$zLouisiana$vMaps 606 $aAquifers$zArkansas$vMaps 606 $aAquifers$zLouisiana$vMaps 606 $aGroundwater$2fast 607 $aLouisiana$2fast 608 $aMaps.$2fast 608 $aMaps.$2lcgft 615 0$aGroundwater 615 0$aGroundwater 615 0$aAquifers 615 0$aAquifers 615 7$aGroundwater. 702 $aRyals$b G. N. 801 0$bGPO 801 1$bGPO 906 $aBOOK 912 $a9910713527003321 996 $aPotentiometric surface maps of the Sparta Sand ; northern Louisiana and southern Arkansas,1900, 1965, 1975, and 1980$93318716 997 $aUNINA