| 000 | 00372nam a2200121Ia 4500 | ||
|---|---|---|---|
| 001 | MPKV057476 | ||
| 008 | 120911s9999 xx 000 0 und d | ||
| 082 | _a370 | ||
| 245 |
_aJournal of Research in Science Teaching Vol 10 No.1-4 _c; |
||
| 246 | _aJournal of Research in Science Teaching Vol 10 No.1-4 | ||
| 260 |
_aNew York _bJohnWiley and Sons _c1973 |
||
| 650 | _aEducation | ||
| 999 |
_c55469 _d55469 |
||