000 00395nam a22001457a 4500
020 _a0029253608
050 _aHD41
_b.P67 1980
100 _aPorter, Michael E.
245 _aCompetitive strategy
_cMichael E. Porter
260 _aLondon
_bCollier Macmillan publishers
_c1980
300 _axx;396p.
_bill.Index and appndix
650 _aCompetition
650 _aIndustrial management
942 _cLL
999 _c4514
_d4514