000 00392nam a2200145Ia 4500
008 211013s9999 xx 000 0 und d
082 _a658
_bPOR
100 _aBy Porten, Miehael
_9694
245 0 _aCompetitive advantage: creating and sustaning superior performance
250 _a1st
260 _c2004
_bFree Press
_aLondon
300 _axxiv; 557p.
650 _aManagement
_9186
942 _cBK
999 _c367
_d367