| 000 | 00422 a2200145 4500 | ||
|---|---|---|---|
| 082 |
_a691 _bBOG |
||
| 090 |
_c23326 _d37423 |
||
| 100 | _aBogahawatte, V. T. L. | ||
| 245 | _aBuilding materials in Sri Lanka | ||
| 260 |
_aColombo _bNatural Resources, Energy & Sciences Authority of Sri Lanka _c1993 _g1993 |
||
| 300 |
_a38p. _c21cm |
||
| 440 | _aScience education series No. 32 | ||
| 650 | _aBuilding materials | ||
| 942 | _cL | ||
| 999 |
_c50579 _d50579 |
||