000 00522nam a2200205 a 4500
005 20210219152800.0
008 991125n mx 000 0 spa u
035 _aUPN01000060975
245 0 0 _aLIBERTAS
260 _aMéxico, D.F. :
_bComercial Libertas S.A. de C.V.
310 _aMensual
362 0 _a1991 (18)
362 0 _a1992 (29,30)
362 0 _a1993 (34,37,41,43)
362 0 _a1994 (48,49)
362 0 _a1995 5 (53,56) 6 (60,63)
362 0 _a1996 6 (68)
362 0 _a1997 8 (88)
905 _aRevista
999 _c60666
_d60666