01714oam 2200457Ia 450 991069634290332120080124161024.0(CKB)5470000002377403(OCoLC)80017519(EXLCZ)99547000000237740320070125d2006 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierCompilation of historical water-quality data for selected springs in Texas, by ecoregion[electronic resource] /by Franklin T. Heitmuller and Iona P. Williams ; in cooperation with the Texas Parks and Wildlife Department[Reston, Va.] :U.S. Geological Survey,2006.v, 32 pages digital, PDF fileData series ;230Title from PDF title screen (viewed on Jan. 25, 2007).At head of title on HTML title screen: Texas Water Science Center.Includes bibliographic references (page 23).Water qualityTexasDatabasesGroundwaterQualityTexasDatabasesSpringsTexasDatabasesWater qualityGroundwaterQualitySpringsHeitmuller Franklin T1387274Williams Iona P1395554Texas.Parks and Wildlife Department.USGS Texas Water Science Center.Geological Survey (U.S.)GISGISGPOBOOK9910696342903321Compilation of historical water-quality data for selected springs in Texas, by ecoregion3454277UNINA