SLS 629 : 1983 : Unit mass of building materials
- Colombo BCS 1983
- 17p.
STD2830
SLS 629 : 1983
a691:624.045
SRI LANKA-STANDARDS
STANDARDS-SRI LANKA
691:624.045
STD2830
SLS 629 : 1983
a691:624.045
SRI LANKA-STANDARDS
STANDARDS-SRI LANKA
691:624.045