01051nas|a2200193 i 450000500170000000800410001703500150005811100680007324501450014124601900028624600670047626000330054330000230057649000300059965000280062965000220065771001000067981000780077920260817161250.0030818q1999    us  uzm rtt  01|  a1eng d  a.b118209502 aBushland Summer Crops Field Dayd(1999 :cBushland, Texas, USA)10a1999 Bushland Summer Crops Field Day /ca joint report by Conservation & Production Research Laboratory, Agricultural Research Service, USDA34a1999 summer crops field day :bat the Conservation and Production Research Laboratory, Bushland, TX, September 1, 1999 : "improving nutrient and water use efficiency in crop production"30aImproving nutrient and water use efficiency in crop production  aBushland, TX :bUSDA,c1999?  a43 p. (loose-leaf)1 aAREC publication ;v99-31 0aField cropsxCongresses 0aCropsxCongresses1 aUnited States.bAgricultural Research Service.bConservation and Production Research Laboratory2 aUnited States.bAgricultural Research Service.tAREC publication ;v99-31