00505nam a2200181Ia 4500020001500000082002200015100002300037245004300060260003900103300002000142500000500162690000600167700000500173952010400178964001700282921000900299999001500308  a0333518047  a338.6048bP847.CA  aPorter, Michael E.  aThe competitive advantage of nationsb  aLondonbMacmillanc1990 (Rep.1992)  axx, 855p. Index  a  a   a  00104070aISIbISId1998-08-21l0o338.6048 P847.CApDP22193r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a5542  c5542d5542