TY  - GEN
ED  - BUREAU OF CEYLON STANDARDS
TI  - SLS : 452 : 1979 : Specification for concrete non-pressure pipes
PY  - 1979///
CY  - Colombo
PB  - BUREAU OF CEYLON STANDARDS
KW  - a621.643.2.666.972
KW  - SRI LANKA-STANDARDS
KW  - STANDARDS-SRI LANKA
N1  - STD2629
ER  -