Lehmbauworkshop Bluefactory Fribourg, Pass. du Cardinal 1, 1700 Freiburg 18.04.2017 Earth building workshop Bluefactory Fribourg, Pass. du Cardinal 1, 1700 Freiburg Lehmbauworkshop mit den Studierenden des Studio Boltshauser, EPFL Lausanne Earth building workshop with the students of Studio Boltshauser, EPFL Lausanne