000 00305nam a2200133Ia 4500
005 20260716043744.0
080 _a19.01.05 C7581
245 _aWorking document
260 _bUnesco
_aCaracas
_c1984
300 _a19 leaves
583 _c11/28/06
_kJOYD
650 _aINFORMATION NETWORKS
942 _cM
_mC7581
999 _c53646
_d53646