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 Conference,"Substandard vessels, particularly those registered under flags of convenience : fifth item on the agenda",,International Labour Office,1975,Report,,"9221014673,9221014681",,https://cir.nii.ac.jp/crid/1130282272338132096