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 United States. Dept. of Commerce and National Bureau of Standards,Medical x-ray protection up to two million volts,,U. S. Dept. of Commerce,1950,National Bureau of Standards handbook,,,,https://cir.nii.ac.jp/crid/1130282271578204160