On the occasion of the 900th anniversary of the monastery of Engelberg, renewed and sponsored by the Grand Council of Stands (2020)
Lecture on Dec. 6, 2019: https://www.ugr.ch/?p=1876
On the occasion of the 900th anniversary of the monastery of Engelberg, renewed and sponsored by the Grand Council of Stands (2020)
Lecture on Dec. 6, 2019: https://www.ugr.ch/?p=1876