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 Food and Agriculture Organization of the United Nations. Statistics Division,Guidelines for the computation of selected statistical indicators,,Food and Agriculture Organization of the United Nations,1986,FAO economic and social development paper,,9251023670,,https://cir.nii.ac.jp/crid/1130000798232689664