000 00515nam a2200169Ia 4500
008 100324s9999 xx 000 0 und d
020 _a0-684-84146-0
100 _aPorter, Michael E
245 _aCompetitive advantage: creating and sustaining superior performance
250 _a1998yr edn
260 _c1998
_bFree Press
_aNew York
300 _axxiv, 557p.
366 _b1998
541 _gB2063679 dt 23/08/2002
650 _aStrategic Management
942 _cBK
999 _c85373
_d85373