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| Coaching |
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Gabler: ISBN
Coaching—Durch systemisches Denken zu innovativer
Personalentwicklung / Wilhelm Backhausen & J-P. Thommen
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Random House: ISBN
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Communication |
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Econ Velag: ISBN 3-430-13271-1
Erfolg durch Kommunikation / Heinz Goldmann
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Random House: ISBN
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Negotiation |
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Random House: ISBN 0-09-924842-5
Getting to YES / Roger Fisher & William Ury
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Econ Velag
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Random House: ISBN
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Partnerships |
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