000 00351nam a2200121Ia 4500
008 220217s9999 xx 000 0 und d
245 0 _aMethods of test for raw isobutene-isoprene rubbers (II R or butyl).
260 _c1980
500 _aStandard number: BS 4470 SO2302; 1978
650 _aButyl
650 _aIsobutene isoprene rubber
942 _cST
999 _c73093
_d73093