00365nam a2200157Ia 45000010006000000050017000060080041000230410008000640820016000721000025000882450062001132600009001753000007001846500008001916540008001991396420260306164839.0260306t1993||||xx |||||||||||||| ||spa||  aESP  a005.74bK76  aKorth, Henry F.eAUT 0aFundamentos de bases de datos = Database systems concepts  c1993  ac  aGEN  aCCC