00371nam a2200133Ia 4500008004100000100002000041245008200061260000900143300001500152504000800167650001400175650001900189773002900208181130s2018    xx            000 0 und d  aDonaldson, Dave  aRailroads of the rajbestimating the impact of transportation infrastructure   c2018  ap.899-934.  dApr  aRailroads  aTransportation  aAmerican Economic Review