• Peter F. Drucker Concentration is the key to economic results. No other principles of effectiveness is violated as constantly today as the basic principle of concentration.
    Peter F. Drucker
    American management consultant and writer 1909-2005
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Peter F. Drucker - Concentration is the key to economic results. No other principles of effectiveness is violated as constantly today as the basic principle of concentration.
Concentration is the key to economic results. No other principles of effectiveness is violated as constantly today as the basic principle of concentration. by : Peter F. Drucker
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mountains-with-lake Concentration is the key to economic results. No other principles of effectiveness is violated as constantly today as the basic principle of concentration.
- Peter F. Drucker Greatest-Quotations.com