01616nam 2200397 a 450 991070085530332120110817124452.0(CKB)5470000002412464(OCoLC)747038090(EXLCZ)99547000000241246420110817d2011 ua 0engurcn|||||||||txtrdacontentcrdamediacrrdacarrierEnvironmental factors that influence the location of crop agriculture in the conterminous United States[electronic resource] /by Nancy T. Baker and Paul D. Capel ; National Water-Quality Assessment ProgramReston, Va. :U.S. Dept. of the Interior, U.S. Geological Survey,2011.1 online resource (x, 72 pages) illustrationsScientific investigations report ;2011-5108Title from title screen (viewed on Aug. 17, 2011).Includes bibliographical references (pages 34-35).Crop zonesUnited StatesField cropsLocationEnvironmental aspectsUnited StatesCrop zonesField cropsLocationEnvironmental aspectsBaker Nancy Tucker1957-1396043Capel Paul D1388306Geological Survey (U.S.)National Water-Quality Assessment Program (U.S.)GPOGPOBOOK9910700855303321Environmental factors that influence the location of crop agriculture in the conterminous United States3532452UNINA