000 00306 a2200133 4500
082 _a614.862
_bUn3
245 1 _aRESEARCH ON ROAD SAFETY
260 _aLondon
_bHmso
_c1963
300 _a602
650 _aHighway Research
650 _aRoads -- Safety Measurement
964 _gCIRC
997 _a33115 s C
999 _c455286
_d455286