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 British Standards Institution,British standard specification for copper-alloy three-piece unions for low and medium pressure British standard screwed copper tubes (primarily for domestic and similar work),,Crosby Lockwood,1919,British Engineering Standards Association,,,,https://cir.nii.ac.jp/crid/1130000797611029888