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 "Ringbom, Henrik",Competing norms in the law of marine environmental protection : focus on ship safety and pollution prevention,,Kluwer Law International,1997,International environmental law and policy series,,9041106995,,https://cir.nii.ac.jp/crid/1130000793908277248