SLS : 449 : 1978 : Specification for glazed earthenware pipes
- Colombo BUREAU OF CEYLON STANDARDS 1978
STD2627
SLS 449 : 1978
a621.643.2:628.24:696.1:666.73
SRI LANKA-STANDARDS
STANDARDS-SRI LANKA
621.643.2:628.24:696.1:666.73
STD2627
SLS 449 : 1978
a621.643.2:628.24:696.1:666.73
SRI LANKA-STANDARDS
STANDARDS-SRI LANKA
621.643.2:628.24:696.1:666.73