Railway labor cost per unit of traffic, class I steam railways, 1913-1937
Subtitle: (Reissue of Statement no. 3648 on the same subject with added years) ...
Series: Its Statement -- no. 3839; Statement (United States. Interstate Commerce Commission. Bureau of Transport Economics and Statistics) -- no. 3839
Published: 1938
Place of publication: Washington, D.C
Language: eng
Number of pages: 11
Subjects: Railroads; Cost of operation