| 000 | 00340nam a2200133Ia 4500 | ||
|---|---|---|---|
| 082 |
_a370.78 _bCEE |
||
| 100 |
_aCERI _9709 |
||
| 245 |
_aEducational technology _b: the design and implementation of learning system |
||
| 260 |
_aParis _bOECD _c1971 |
||
| 300 | _a86p. | ||
| 546 | _aeng | ||
| 650 |
_aEducational technology _924556 |
||
| 942 | _cBK | ||
| 999 |
_c24361 _d24361 |
||