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 "Koopmans, Tjalling Charles",Activity analysis of production and allocation : proceedings of a conference,,University Microfilms International,1951,U.M.I. out-of-print books on demand,,,,https://cir.nii.ac.jp/crid/1130282268716453504