| 000 | 00836nam a2200253 a 4500 | ||
|---|---|---|---|
| 005 | 20210223131816.0 | ||
| 008 | 080918s1977 mx r 000 0 spa d | ||
| 020 | _a9232013266 | ||
| 020 | _a9231013262 (softbound) | ||
| 020 | _a9231013327 (hardbound) | ||
| 035 | _aUPN01000186364 | ||
| 049 | _aUNE | ||
| 080 | _a374 (100) =40 MAC | ||
| 100 | 1 |
_aMacKenzie, Norman, _d1921-2013 _938218 |
|
| 245 | 1 | 0 |
_aÉtudes ouvertes : _bSystems d´instruction postsecondaire á distance/ _cNorman Mackenzie, Richmond Postgate, John Scupham. |
| 260 |
_aParis : _bUNESCO, _c1977. |
||
| 300 | _a448 p. | ||
| 690 | _aEnseñanza a distancia - Estudio de Casos | ||
| 690 | _aSistemas de enseñanza abierta - Estudio de casos | ||
| 700 | 1 |
_aPostgate, Cichmond, _ecoaut. |
|
| 700 | 1 |
_aScupham, John _ecoaut. |
|
| 710 | 2 | _aUNESCO | |
| 905 | _aUNESCO | ||
| 999 |
_c158467 _d158467 |
||