Persistent identifier https://phaidra.univie.ac.at/o:1683963
Handle https://hdl.handle.net/11353/10.1683963
URI https://valep.vc.univie.ac.at/virtualarchive/public/Carnap_to_Roger_W_Shugg_University_of_Chicago_Press_1961-07-24_L_Original/dv:951557