01189oas 2200361 a 450 991069582070332120070808095849.0(CKB)5470000002373587(OCoLC)144608736(EXLCZ)99547000000237358720070618b20032005 ua engur|||||||||||txtrdacontentcrdamediacrrdacarrierBTS issue brief[electronic resource]Washington, D.C. U.S. Dept. of Transportation, Bureau of Transportation Statistics, Office of Advanced Studiesvolumes digital, PDF fileDescription based on first issue; title from title screen (viewed on June 18, 2007).Final issue consulted.Issue briefBureau of Transportation Statistics issue briefTransportationUnited StatesPeriodicalsTransportationUnited States.Bureau of Transportation Statistics.GPOGPOGPOJOURNAL9910695820703321BTS issue brief3155216UNINA