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 Great Britain. Hydrographic Department,Global maritime distress and safety system (GMDSS),,United Kingdom Hydrographic Office,2018,N.P.,,9780707744643,,https://cir.nii.ac.jp/crid/1130000796118460416