| 000 | 00813nam a2200241 a 4500 | ||
|---|---|---|---|
| 005 | 20210223131815.0 | ||
| 008 | 080918s1975 mx r 000 0 spa d | ||
| 020 | _a9231013262 (softbound) | ||
| 020 | _a9231013327 (hardbound) | ||
| 035 | _aUPN01000186358 | ||
| 049 | _aUNE | ||
| 080 | _a374 (100) =20 MAC | ||
| 100 | 1 |
_aMacKenzie, Norman, _d1921-2013 _938218 |
|
| 245 | 1 | 0 |
_aOpen learning : _bSystems and problems in post-secondary education / _cNorman Mackenzie, Richmond Postgate, John Scupham. |
| 260 |
_aMadrid, Esp. : _bUNESCO, _c1975. |
||
| 300 | _a498 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 |
_c158461 _d158461 |
||