000 00366pam a2200145a 44500
008 160422s9999 xx 000 0 und d
082 _a382.1042 POR
100 _aPorter,Michael E.
245 _aOn competition
260 _aBoston
_bHarvard Business Review
_c1998
300 _a485p
650 _aTransportation
650 _aCommunication
650 _aCommerce
999 _c85285
_d85285