| 000 | 00423nam a2200145 a 4500 | ||
|---|---|---|---|
| 005 | 20210219161907.0 | ||
| 008 | 131108s2000 mx r 000 0 spa d | ||
| 020 | _a1903598001 | ||
| 035 | _aUPN01000193981 | ||
| 049 | _aUNE | ||
| 080 | 4 | _aOC 5: 6 (100) "2000" WOR | |
| 245 | 0 | 0 |
_aWorld conference on science : _bScience for the twenty-first century a new commitment. |
| 260 |
_aParis : _bUNESCO, _c2000. |
||
| 300 | _a544 p. | ||
| 999 |
_c166082 _d166082 |
||