Persistent identifier https://phaidra.univie.ac.at/o:1712269
Handle https://hdl.handle.net/11353/10.1712269
URI https://valep.vc.univie.ac.at/virtualarchive/public/Birgit_Gramm_to_Carnap_1947-08-22_1947-08-19_L_Original/dv:982461