01512nam 2200385Ia 450 991070026360332120110411083431.0(CKB)5470000002408339(OCoLC)712023706(EXLCZ)99547000000240833920110411d2011 ua 0engurcn|||||||||txtrdacontentcrdamediacrrdacarrierTillage practices in the conterminous United States, 1989-2004--datasets aggregated by watershed[electronic resource] /by Nancy T. Baker ; prepared in cooperation with the Conservation Technology Information CenterReston, VA :U.S. Dept. of the Interior, U.S. Geological Survey,2011.1 online resource (22 unnumbered pages)Data series ;573Title from title screen (viewed Apr. 7, 2011)."National Water-Quality Assessment Program."Includes bibliographical references (page 12).TillageUnited StatesTillageBaker Nancy Tucker1957-1396043National Water-Quality Assessment Program (U.S.)Conservation Technology Information Center.Geological Survey (U.S.)GPOGPOBOOK9910700263603321Tillage practices in the conterminous United States, 1989-2004--datasets aggregated by watershed3489825UNINA