TY  - GEN
ED  - BUREAU OF CEYLON STANDARDS
TI  - SLS 629 : 1983 : Unit mass of building materials 
PY  - 1983///
CY  - Colombo
PB  - BCS
KW  - a691:624.045
KW  - SRI LANKA-STANDARDS
KW  - STANDARDS-SRI LANKA
N1  - STD2830
ER  -