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,"P. L. 480 concessional sales : history, procedures, negotiating and implementing agreements",,U. S. Govt. Print. Off.,1978,Foreign agricultural economic report,,,,https://cir.nii.ac.jp/crid/1130000796810591360