00258nam a2200097Ia 4500008004100000082001600041100001400057245004500071260003300116300001100149240817s9999    xx            000 0 und d  a385.012 H45  aHay, W.W. 0aIntroduction and transportion enginering  c1961a New Yorkb Jone Wiley  a505 p.