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,Exposure of the population in the United States and Canada from natural background radiation : recommendations of the National Council on Radiation Protection and Measurements,,The Council,1987,NCRP report,,0913392936,,https://cir.nii.ac.jp/crid/1130282270919603584