SLS : 721 : 1985 : Tolerance limits for industrial and domestic effluents discharged into marine coastal areas
- Colombo SLSI 1985
STD2895
SLS 721
a628.393:628.311
SRI LANKA-STANDARDS
STANDARDS-SRI LANKA
STD2895
SLS 721
a628.393:628.311
SRI LANKA-STANDARDS
STANDARDS-SRI LANKA