LEADER 01801oam 2200481 a 450 001 9910697239503321 005 20080930162655.0 035 $a(CKB)5470000002386528 035 $a(OCoLC)65284986 035 $a(EXLCZ)995470000002386528 100 $a20060329d2006 ua 0 101 0 $aeng 135 $aurmn||||m|||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aCounty-level estimates of nutrient inputs to the land surface of the conterminous United States, 1982-2001$b[electronic resource] /$fby Barbara C. Ruddy, David L. Lorenz, and David K. Mueller 210 1$aReston, Va. :$cU.S. Dept. of the Interior, U.S. Geological Survey,$d2006. 215 $av, 17 pages $cdigital, PDF fIle 225 1 $aScientific investigations report ;$v2006-5012 300 $a"National Water-Quality Assessment Program." 300 $aTitle from PDF title screen (viewed on Mar. 28, 2006). 320 $aIncludes bibliographical references (pages 16-17). 606 $aPlant nutrients$zUnited States 606 $aFertilizers$zUnited States 606 $aManures$zUnited States 606 $aAtmospheric deposition$zUnited States 615 0$aPlant nutrients 615 0$aFertilizers 615 0$aManures 615 0$aAtmospheric deposition 700 $aRuddy$b Barbara C$01383938 701 $aLorenz$b D. L$01383883 701 $aMueller$b David K$01394533 712 02$aNational Water-Quality Assessment Program (U.S.) 712 02$aGeological Survey (U.S.) 801 0$bGIS 801 1$bGIS 801 2$bGPO 906 $aBOOK 912 $a9910697239503321 996 $aCounty-level estimates of nutrient inputs to the land surface of the conterminous United States, 1982-2001$93488026 997 $aUNINA