o:1683967
o:1714998
Persistent identifier https://phaidra.univie.ac.at/o:1683966
Handle https://hdl.handle.net/11353/10.1683966
URI https://valep.vc.univie.ac.at/virtualarchive/public/Carnap_to_University_of_Chicago_Press_Roger_W_Shugg_1962-03-16_L/d:951542