| 000 | 00668nam a2200229 a 4500 | ||
|---|---|---|---|
| 005 | 20210219160544.0 | ||
| 008 | 081111s1977 mx r 000 0 spa d | ||
| 035 | _aUPN01000167895 | ||
| 049 | _aUNE | ||
| 080 | _a338 (252) =20 DEV No.6 | ||
| 245 | 0 | 0 | _aDevelopment of arid and semi-arid lands: Obstaclesand prospects |
| 260 |
_aParis : _bUNESCO, _c1977. |
||
| 300 | _a42 p. | ||
| 440 | 0 | _a(MAB Technical notes; 6) | |
| 500 | _aIncluye bibliografía | ||
| 690 | _aDesarrollo industrial | ||
| 690 | _aTransferencia de tecnologia | ||
| 690 | _aZonas aridas | ||
| 710 | 2 | _aUNESCO | |
| 711 | 2 | _aMAB. Programa sobre el Hombre y la Biosfera. | |
| 905 | _aUNESCO | ||
| 999 |
_c140006 _d140006 |
||