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 "Langsdorf, Alexander Suss",Principles of direct-current machines,"2nd ed. rev., enl. and entirely reset",McGraw-Hill,1919,Electrical engineering texts,,,,https://cir.nii.ac.jp/crid/1130000796249188224