| 000 | 00594nam a2200193 a 4500 | ||
|---|---|---|---|
| 005 | 20210219160202.0 | ||
| 008 | 080923s1975 mx r 000 0 spa d | ||
| 020 | _a9231012568 | ||
| 035 | _aUPN01000160421 | ||
| 049 | _aUNE | ||
| 080 | _aOC 002.6: 3 (100)=20 DAR No. 31 | ||
| 245 | 0 | 0 |
_aDARE ; Information management system : _ba condensed system description . |
| 260 |
_aParis : _bUNESCO, _c1975. |
||
| 300 |
_a23 p. ; _bfig. |
||
| 440 | 0 |
_aReports and papers in the social sciences ; _v31. |
|
| 690 | _aSistemas de informacion- Ciencias sociales | ||
| 710 | 2 | _aUNESCO | |
| 905 | _aUNESCO | ||
| 999 |
_c132535 _d132535 |
||