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 "Nelson, Ralph L. (Ralph Lowell)","Merger movements in American industry, 1895-1956",,University Microfilms,1959,National Bureau of Economic Research general series,,,,https://cir.nii.ac.jp/crid/1130851617764205582