TY - GEN ED - BUREAU OF CEYLON STANDARDS TI - SLS : 484 : part 6 : 1980 : Methods of test for raw natural rubber part 6 : determination of plasticity retention index PY - 1980/// CY - Colombo PB - BUREAU OF CEYLON STANDARDS KW - a678.032:535.661.3 KW - SRI LANKA-STANDARDS KW - STANDARDS-SRI LANKA N1 - STD2676 ER -