00671cas|a2200145 i 450000500170000000800410001703500150005811100820007324500720015526000920022730000190031949000330033865000540037181001000042520260817161644.0030213s1970    us  uzm rtt  01|  a1eng d  a.b118764992 aConference on Advanced Urban Transportation Systemd(1970 :cPittsburgh, Pa.)10aAdvanced urban transportation :bproceedings of the Carnegie-Mellon  aPittsburgh, Pa. :bCarnegie-Mellon University, Transportation Research Institute,c1970  a148 p. :bill.1 aTRI research report ;vno. 5 0aUrban transportationxAddresses, essays, lectures2 aCarnegie - Mellon University.bTransportation Research Institute.tTRI research report ;vno. 5