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. National Radiological Protection Board,Includes board statement on emergency reference levels,,National Radiological Protection Board,1990,Documents of the NRPB,,0859513297,,https://cir.nii.ac.jp/crid/1130282272256759296