00309nam a2200109Ia 4500008004100000082001400041082000800055245010700063245001000170260001000180300000900190231017s9999    xx            000 0 und d  a388.41121  bJAC 0aNCHRP Synthesis 264: Modern Roundabout Practice in the United States (A Synthesis of Highway Practice) 0cNCHRP  bNCHRP  c30cm