المؤلفون: Beshers, Eric W.

الموضوعات: Railroads Freight Economic aspects United States., Freight cars Economic aspects United States., Freight and freightage Economic aspects United States., Transports ferroviaires Marchandises Aspect économique États-Unis., Wagons de marchandises Aspect économique États-Unis., Transport de marchandises Aspect économique États-Unis., Freight and freightage Economic aspects., schedules and scheduling., carloadings., United States.

URL: http://www.fra.dot.gov/downloads/policy/policy_carload_study_2004.pdf
http://worldcat.org/oclc/234085153/viewonline