000 00319nam a2200145Ia 4500
001 19156
008 230315s9999 xx 000 0 und d
100 _aHill, John
245 0 _aExploring Information Technology
260 _aUK
260 _bWayland (Publishers) Ltd
260 _c1991
300 _a48
942 _cBK
999 _c7516
_d7516