著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
"Dunham, Denis Ferrol and United States. Dept. of Agriculture. Economics and Statistics Service",Developments in farm to retail price spreads for food products in 1980,,"U.S. Dept. of Agriculture, Economics and Statistics Service",1981,Agricultural economic report,,,,https://cir.nii.ac.jp/crid/1130000794391550848