| 000 | 00351nam a2200133Ia 4500 | ||
|---|---|---|---|
| 005 | 20260720174640.0 | ||
| 008 | 260720s1986 xx 000 0 und d | ||
| 041 | _aeng | ||
| 082 | _a500 LAYI | ||
| 100 |
_aLayton, David _9269674 |
||
| 245 | _aInnovations in science and technology education vol-1 | ||
| 260 |
_aBelgium _bUNESCO _c1986 |
||
| 300 | _a188p | ||
| 999 |
_c243819 _d243819 |
||