000 00370nam a22001577a 4500
003 OSt
020 _a9781422157985
082 _a658.4012
_bHBR/ST
100 _aPorter, Michael E
245 _aStrategy
250 _a1
260 _aBoston
_bHarvard review press
_c2011
300 _a266p.
650 _aFive competitive forces that shape strategy
942 _2ddc
_cBK
999 _c190877
_d190877