000 00325nam a2200133Ia 4500
008 190711s9999 xx 000 0 und d
020 _a0070447543
082 _a621.3819535 K85
100 _aKORTH,H.F
245 0 _aDATA BASE SYSTEM CONCEPTS
260 _aNEW YORK
_bMcGraw-Hill
_c1991
300 _a24X17
942 _cBK
_2DDC
999 _c23651
_d23651