00325nam a2200109Ia 450000500170000000800410001703500080005810000220006624500770008826000210016565000290018620251022063807.0251022s9999||||xx |||||||||||||| ||und||  a168  aMichael E. Porter 0aCompetitive Strategy Techniques for Analyzing Industries and Competitors  bFree Pressc2004  aC-07:Strategy and Policy