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
U. S. Dept. of Agriculture. Economic Research Service,U. S. agricultural exports under Public Law 480,,U. S. Dept. of Agriculture. Economic Research Service,1974,ERS-foreign,,,,https://cir.nii.ac.jp/crid/1130282269307723904