author = { USA Bureau of Transportation Statistics },

title = { National transportation statistics },

publisher = {},

isbn = {0161-8628},

keywords = { Verkehrsstatistik , USA , Amtsdruckschrift , Statistik , Graue Literatur , Zeitschrift },

year = {2001-},

abstract = {Gesehen am 23.03.2017},

address = { Washington, DC },

url = { http://slubdd.de/katalog?TN_libero_mab2 }