| 000 | 00343nam a2200133Ia 4500 | ||
|---|---|---|---|
| 008 | 180710s9999 xx 000 0 und d | ||
| 020 | _a167487 | ||
| 082 |
_a500 _bSRI |
||
| 245 | _aSri Lanka association for the advancement of science | ||
| 260 |
_aColombo _bVidya mandiraya _c1989 |
||
| 300 | _axiii, 143 p. | ||
| 650 | _aScience | ||
| 942 | _cS | ||
| 999 |
_c79568 _d79568 |
||