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 National Council on Radiation Protection and Measurements,"Medical X-ray, electron beam, and gamma-ray protection for energies up to 50 MeV : (equipment design, performance, and use) : recommendations of the National Council on Radiation Protection and Measurements",,The Council,1989,NCRP report,,0929600037,,https://cir.nii.ac.jp/crid/1130282271598581504