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
,"Regional shifts in the bituminous coal industry : a summary : what have been their extent, their causes and their effects? : what can be done about instability in the soft coal industry?",,"Bureau of Business Research, University of Pittsburgh",1936,Bureau of Business Research monographs,,,,https://cir.nii.ac.jp/crid/1130000794418994688