| 000 | 00331nam a2200097Ia 4500 | ||
|---|---|---|---|
| 008 | 120224s9999 xx 000 0 und d | ||
| 082 |
_a373 _bORG |
||
| 100 | _aOrganisation for Economic Co-operation and Development. | ||
| 245 | _aDevelopment of secondary educaiton : trends and implications | ||
| 260 |
_bThe author _aParis _c1969 |
||
| 999 |
_c139877 _d139877 |
||