o:1684034
Persistent identifier https://phaidra.univie.ac.at/o:1684033
Handle https://hdl.handle.net/11353/10.1684033
URI https://valep.vc.univie.ac.at/virtualarchive/public/Carnap_to_Robert_L_Shebs_University_of_Chicago_Press_1952-01-06_L/d:951389