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4、a) b) c) d) e) 4： 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS M ISO 9727 4:2009 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Cylindrical cork stoppers Physical testsPart 4：Determination of dimensional recovery after compression ICS 55.100 ; 79.100
