00417cam a22001097a 4500008004000000082001400040245009800054260005000152300001100202650002500213700006900238180718b1965   xxu||||| |||| 00| 0 eng d  aW4x42 Un3  aResearch on road trafficcby Department of Scientific and Industrial Research, United Kingdom  aLondonbHer Majesty's Stationery Officec1965  a505+p.  aTraffic engineering.  aUnited Kingdom. Department of Scientific and Industrial Research