![]() | The Impact of Culture on Relationship Marketing in International Services Dr. Jan H. Schumann obtained his doctorate with Prof. Dr. Florian v. Wangenheim at the Technische Universität München. |
![hidden image for function call](https://upload.wikimedia.org/wikipedia/commons/c/ca/1x1.png)
![]() | The Impact of Culture on Relationship Marketing in International Services Dr. Jan H. Schumann obtained his doctorate with Prof. Dr. Florian v. Wangenheim at the Technische Universität München. |