EPFL is the Ècole polytechniqoue fédérale de Lausanne (Swiss Federal Institute of Technology in Lausanne), one of the biggest Universities in Switzerland and the counterpart of the ETH Zurich in the french-speaking part of Switzerland.
The stamp has a nice full look, worked around the swiss cross. A little big oldschool, but distinguished.
I like that they really stamp the side of the book.
Not only on one, but on two sides.