| 000 | 00431nam a22001457a 4500 | ||
|---|---|---|---|
| 020 | _a9231027794 | ||
| 082 |
_a507 _bINN.N2 |
||
| 245 |
_aInnovations in science and technology education Vol.IV / _cedited by David Layton |
||
| 260 |
_aParis : _bUNESCO, _c1992. |
||
| 300 | _a218p. | ||
| 650 | _aScience and technology | ||
| 650 | _aTeachers training and professional development | ||
| 700 | _aDavid, Layton | ||
| 942 |
_2ddc _cUN&WB |
||
| 999 |
_c712612 _d712612 |
||