| 000 | 00510nam a2200169 a 4500 | ||
|---|---|---|---|
| 005 | 20210219160249.0 | ||
| 008 | 081001s2000 mx r 000 0 spa d | ||
| 035 | _aUPN01000161838 | ||
| 049 | _aUNE | ||
| 080 | _a341.24: 008 (100)=20 "1951" TRA. | ||
| 245 | 0 | 0 | _aTrade barriers to knowledge : a manual of regulations affecting educational, scientific and cultural materials. |
| 260 | _aParis : UNESCO, 1951. | ||
| 300 | _a167 p. | ||
| 690 | _aAcuerdos culturales | ||
| 710 | 2 | _aUNESCO | |
| 905 | _aUNESCO | ||
| 999 |
_c133951 _d133951 |
||