| 000 | 00361nam a2200121Ia 4500 | ||
|---|---|---|---|
| 008 | 180710s9999 xx 000 0 und d | ||
| 020 | _a197149 | ||
| 082 |
_a507.2 _bNAT |
||
| 245 | _aSCIENCE Investigations= விஞ்ஞான ஆய்வுகள் | ||
| 260 |
_aColombo _bThe Science Education Research Committee _c1981 |
||
| 300 | _axx, 73 p. | ||
| 942 | _cR | ||
| 999 |
_c77912 _d77912 |
||