Concentration is the key to economic results. No other principles of effectiveness is violated as constantly today as the basic principle of concentration
Peter Drucker
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juni
14
2011
Concentration is the key to economic results. No other principles of effectiveness is violated as constantly today as the basic principle of concentration
Peter Drucker
There is nothing so practical as a good theory. Kurt Lewin |
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Do not say a little in many words but a great deal in a few. Pythagoras |