000 00383nam a2200121Ia 4500
008 220217s9999 xx 000 0 und d
245 0 _aMethods of test for raw isobutene-isoprene rubbers (II R or butyl)
260 _aLondon
260 _c1980:1978
_bBritish Standards Institution
500 _aStandard number: BS 4470: ISO 2302
650 _aIsobutene-isoprene rubber
942 _cST
999 _c73094
_d73094