Lecture by Roger Boltshauser Technisches Rathaus, August-Bebel-Strasse 92, 33602 Bielefeld 08.06.2024 Lecture by Roger Boltshauser Technisches Rathaus, August-Bebel-Strasse 92, 33602 Bielefeld Roger Boltshauser: Tradition, material and potential, 08.06.24 6 p.m. Roger Boltshauser: Tradition, material and potential, 08.06.24 6 p.m.