This booklet was printed by U.S. Wheat Associates in cooperation with the United States Department of Agriculture, Grain Inspection, Packers and Stockyards Administration, Federal Grain Inspection Service, to provide information on the national, official grain inspection and weighing system. 本手冊(cè)由美國(guó)小麥協(xié)會(huì)美國(guó)農(nóng)業(yè)部GPSA,FGIS編寫提供