LEADER 01935oes 2200589 450 001 9910698934503321 005 20180813130901.0 035 $a(CKB)5470000002398532 035 $a(OCoLC)1045635987 035 $a(EXLCZ)995470000002398532 100 $a20180724b19922010 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 of the lower Patapsco Aquifer in southern Maryland, September ... /$fprepared in cooperation with Maryland Geological Survey and Maryland Tidewater Administration 210 1$a[Towson, Md.] :$cDepartment of the Interior, U.S. Geological Survey 215 $a1 online resource (maps) 225 1 $aOpen-file report 300 $aRelief shown by contours and spot heights. 300 $a"Base from USGS digital line graph, 1:250,000." 300 $aCoordinates for map based on: 1990. 300 $aIssued in color, 2007-2009. 606 $aGroundwater$zMaryland, Southern$vMaps 606 $aAquifers$zMaryland, Southern$vMaps 606 $aAquifers$2fast 606 $aGroundwater$2fast 607 $aPatapsco Aquifer$vMaps 607 $aMaryland, Southern$2fast 607 $aUnited States$zPatapsco Aquifer$2fast 608 $aMaps.$2fast 608 $aOnline resources. 608 $aMaps.$2lcgft 615 0$aGroundwater 615 0$aAquifers 615 7$aAquifers. 615 7$aGroundwater. 712 02$aMaryland.$bTidewater Administration. 712 02$aMaryland Geological Survey. 801 0$bGPO 801 1$bGPO 801 2$bGPO 801 2$bMERUC 801 2$bGPO 906 $aJOURNAL 912 $a9910698934503321 996 $aPotentiometric surface of the lower Patapsco Aquifer in southern Maryland, September$93113236 997 $aUNINA