00281nam a2200109Ia 4500008004100000041000800041082001900049100001200068245004500080260003800125300000800163211209s1974    xx            000 0 und d  aeng  a629.04 N74 HAY  aHAY W W  aINTRODUCTION TO TRANSPORATION ENGINEERS   aLONDONbJOHN WILEY AND SONSc1974  a518