Vienna Book Launching
![Vienna](https://nobility.org/wp-content/uploads/2011/06/Image1.jpg)
From left to right: Prince Luiz of Orleans-Braganza from Brazil, Duke Paul of Oldenburg from Germany and Prof. Roberto de Mattei.
![Vienna2](https://nobility.org/wp-content/uploads/2011/06/Vienna2.jpg)
From left to right: Count Peter zu Stolberg-Stolberg, Prince Luiz of Orleans-Braganza from Brazil, Duke Paul of Oldenburg from Germany and Prof. Roberto de Mattei.