| 000 | 00457nam a2200169 a 4500 | ||
|---|---|---|---|
| 005 | 20210219160417.0 | ||
| 008 | 081107s1997 mx r 000 0 spa d | ||
| 035 | _aUPN01000165175 | ||
| 049 | _aUNE | ||
| 080 | _a37 (091) =20 "1997" YEA. | ||
| 245 | 0 | 0 | _a50 Years for education. |
| 260 |
_aParis : _bUNESCO, _c1997. |
||
| 300 |
_a285 p. ; _bil., retrs., fot. |
||
| 690 | _aEducacion- UNESCO | ||
| 690 | _aHistoria educacional- UNESCO | ||
| 905 | _aUNESCO | ||
| 999 |
_c137287 _d137287 |
||