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 "Crum, W. L.",Corporate earning power in the current depression,,Harvard University Graduate School of Business Administratiion. Bureau of Business Research,1935,Publication of the graduate school of business administration,,,,https://cir.nii.ac.jp/crid/1130282272848189056