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
United Nations. Statistical Office,"Commodity imports, 1967 : share of the developing countries in the imports of principal trading nations",,United Nations,1969,Statistical papers,,,,https://cir.nii.ac.jp/crid/1130282270115901952