| 000 | 004650000a22001690004500 | ||
|---|---|---|---|
| 999 |
_c65576 _d65576 |
||
| 027 |
_aSLS 452 : 1979 _q1979 |
||
| 041 | _aeng | ||
| 942 | _cSD | ||
| 110 | _aBUREAU OF CEYLON STANDARDS | ||
| 245 | _aSLS : 452 : 1979 : Specification for concrete non-pressure pipes | ||
| 260 |
_aColombo _bBUREAU OF CEYLON STANDARDS _c1979 |
||
| 300 | _a33p. | ||
| 500 | _aSTD2629 | ||
| 650 | _aa621.643.2.666.972 | ||
| 650 | _aSRI LANKA-STANDARDS | ||
| 650 | _aSTANDARDS-SRI LANKA | ||