00341nam a2200121Ia 4500008004100000245008000041260000900121500002900130650000800159650002500167650001900192650000800211220217s9999    xx            000 0 und d 0aMethods for testing tar and bitumen: Determination of mineral matter (Ash).  c1958  aStandard number: IS 1217  aAsh  aBituminous materials  aMineral matter  aTar