000 00301nam a2200121Ia 4500
999 _c11978
_d11978
020 _a9780743260879
082 _a658
_bPOR
100 _aPorter, Michael
245 0 _aCompetitive advantage : creating and sustaining superior performance
260 _bFree Press
_c1998
300 _a557p.
942 _cBK