Porter, Michael E.
On competition / Michael E. Porter
Harvard Business Review Book, 1998
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Porter, Michael E.
Competitive advantage : creating and sustaining superior performance
The Free Press , 1985
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Michael E. porter on competition and strategy
Harvard Business School Press, 1991
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Rothberg, Helen N
From knowledge to intelligence : creating competitive advantage in the next economy
Elsevier Butterworth-Heinemann, 2005
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Gray, Edmund R.
Management : the competitive edge
Macmillan, 1990
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