Association of American Railroads. Railroad Committee for the Study of Transportation. (1940). The economics of weight reduction in freight carrying railroad cars.
Chicago-viite (17. p.)Association of American Railroads. Railroad Committee for the Study of Transportation. The Economics of Weight Reduction in Freight Carrying Railroad Cars. [Washington?, 1940.
MLA-viite (8. p.)Association of American Railroads. Railroad Committee for the Study of Transportation. The Economics of Weight Reduction in Freight Carrying Railroad Cars. 1940.
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