Letter / Issued Document - Letter
o:1528640
o:1445920
Persistent identifier https://phaidra.univie.ac.at/o:1445919
Handle https://hdl.handle.net/11353/10.1445919
URI https://valep.vc.univie.ac.at/virtualarchive/public/Neurath_to_Carnap_1939-01-31_L/d:846592