00350nam a2200109Ia 4500008004100000082001100041082000800052245009300060245003900153260003900192300000900231231017s9999    xx            000 0 und d  a665.53  bBAR 0aSummary of health practices: the use of petroleum asphalt in the hot mix paving industry 0cStrategic highway research program  bStrategic highway research program  c30cm