Letter / Issued Document - Letter
o:1528094
Persistent identifier https://phaidra.univie.ac.at/o:1528093
Handle https://hdl.handle.net/11353/10.1528093
URI https://valep.vc.univie.ac.at/virtualarchive/public/Feigl_to_Carnap_1959-04-01_L/d:853309