Persistent identifier https://phaidra.univie.ac.at/o:1486391
Handle https://hdl.handle.net/11353/10.1486391
URI https://valep.vc.univie.ac.at/virtualarchive/public/Folder_11b_Philosophical_Foundations_of_Physics_Lecture_IX_Item_2_1958-1962_1958-1962/a:653861