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 International Labour Office and International Labour Organisation. African Regional Conference,Improvement and harmonisation of social security systems in Africa : second item on the agenda,,International Labour Office,1977,Report,,9221017982,,https://cir.nii.ac.jp/crid/1130000797550160256