TY - GEN ED - BUREAU OF CEYLON STANDARDS TI - SLS 297 : 1974 : Methods of testing vulcanized rubber - part 1 : Determination of relative density and density PY - 1974/// CY - Colombo PB - Bureau of Ceylon Standards KW - a678.43:531.754 KW - SRI LANKA-STANDARDS KW - STANDARDS-SRI LANKA N1 - STD2507 ER -