000 00497nam a2200157Ia 4500
008 210716s1980 xx 000 0 und d
020 _a0029253608
041 _aeng
082 _a658.406 PORM
100 _aPorter, Michael E.
245 _aCompetitive strategy: techniques for analyzing industries and competitors.
_bTechniques for analyzing industries and competitors.
250 _a1
260 _aNew York
_bMacmillan College Publishing Company
_c1980
300 _axx,396
650 _aNone
999 _c203164
_d203164