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041 _aspa
245 0 _aVision - Vol.92 No.2 (1999)
260 _aMéxico :
_bVision Incorporated,
_c1999.
562 _e1
650 _aANALISIS DE COYUNTURA
773 _016581
_aVision :
942 _cSISS
999 _c60782
_d60782