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