000 00394nam a2200133Ia 4500
008 211013s9999 xx 000 0 und d
082 _a658.4012
_bPOR
100 _aBy Porten, Miehael
_9695
245 0 _aCompetitive strategy: techniiques for analyzing industries and competitors
260 _c2004
_bFree Press
_aLondon
300 _axxi; 396p.
650 _aStratedic management
_9696
942 _cBK
999 _c368
_d368