| 000 | 00301cam a22000977a 4500 | ||
|---|---|---|---|
| 008 | 180718b1962 xxu||||| |||| 00| 0 eng d | ||
| 082 | _aP43 Un3w | ||
| 245 | _aWorld trends in secondary education | ||
| 260 |
_aParis _bUnited Nations Educational, Scientific and cultural Organisation _c1962 |
||
| 300 | _a159p | ||
| 999 |
_c494646 _d494646 |
||