000 00327nam a2200133Ia 4500
008 170101s2004 xx 000 0 und d
020 _a521605210
082 _a303.48 VAR
100 _aVarian, Hal R
245 4 _aThe economics of information technology
260 _aCambridge
_c2004
300 _aP.102
942 _2ddc
_cBK
999 _c183631
_d183631