000 00352nam a2200157Ia 4500
008 200202s9999 xx 000 0 und d
082 _a658 POR
100 _a"Porter, Michael E."
245 0 _aCompetative strategy
260 _aLondon
260 _bcollier Macmillan
260 _c1980
300 _a396p.
650 _aCompetition
942 _cB
999 _c36743
_d36743