00311nam a2200109Ia 4500008004100000100006600041245003500107260001300142260002900155260000900184300000800193201214s9999    xx            000 0 und d  aBowersox, Donald J., Calabro, Pat J. and Wagenheim, George D. 0aIntroduction To Transportation  aNew York  bMacmillan Publishing Co.  c1981  a400