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 "Yokel, Felix Y.",Recommended technical provisions for construction practice in shoring and sloping of trenches and excavations,,"U.S. Department of Commerce, National Bureau of Standards",1980,Building science series,,,,https://cir.nii.ac.jp/crid/1130000796056163712