00301nam a2200109u  450000500170000000700030001700800410002024500650006126000300012650000130015665000220016920190501180207.0ta010524|||||||||||||||||||||||||||||eng|u00aRoad signs of the timesbthe new look in U. S. traffic signs0 aOak Lawn, ILbIdealc1977  aD., 5/01 4aSigns and symbols