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Consultative selling : the Hanan formula for high-margin sales at high levels
Hanan, Mack - 2011 - 8th ed.
Persistent link: https://www.econbiz.de/10009244509
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Competing on value
Hanan, Mack - 1991
Persistent link: https://www.econbiz.de/10000817815
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Consultative Selling : The Hanan Formula for High-Margin Sales at High Levels
Hanan, Mack - 2003
Persistent link: https://www.econbiz.de/10012675457