Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
Sawa Sempei,Grade fo Differential Freight Rates in Japanese National Railway,經濟論叢,0013-0273,KYOTO DAIGAKU KEIZAIGAKU-KAI (KYOTO UNIVERSITY ECONOMIC SOCIETY),1955-09,76,3,131-147,https://cir.nii.ac.jp/crid/1390290699818725120,https://doi.org/10.14989/132440