00311nam a2200097Ia 4500008004100000245008100041260000900122500002900131650002900160650002400189220217s9999    xx            000 0 und d 0aSpecification for vulcanized styrene-butadiene rubber (SBR) based compounds.  c1974  aStandard number: IS 7450  aStyrene butadiene rubber  aVulcanized compound