| 000 | 00374nam a2200157Ia 4500 | ||
|---|---|---|---|
| 008 | 131223s9999 xx 000 0 und d | ||
| 040 | _aISI KOLKATA | ||
| 041 | _aEnglish | ||
| 082 |
_a373 _bUn58 |
||
| 110 | _aUnesco | ||
| 245 | _aWorld trends in secondary education | ||
| 260 |
_aParis _bUnesco _c1962 |
||
| 300 | _a159p. | ||
| 650 | _aSecondary education | ||
| 942 | _cBK | ||
| 999 |
_c51850 _d51850 |
||