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 Association of American Railroads. Bureau of Railway Economics,"Railways and agriculture, 1900-1910",,[s.n.],1913,Bulletins of the Bureau of Railway Economics,,,,https://cir.nii.ac.jp/crid/1130000796260116736