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005 20210219152800.0
008 991125s1991 000 0 spa u
022 _a0188-6770
035 _aUPN01000061030
245 0 0 _aMAGISTRALIS
260 _aDistrito Federal, México
_bUniversidad Iberoamericana
310 _aSemestral
905 _aRevista
999 _c60706
_d60706