o:1715025
Persistent identifier https://phaidra.univie.ac.at/o:1715024
Handle https://hdl.handle.net/11353/10.1715024
URI https://valep.vc.univie.ac.at/virtualarchive/public/University_of_Chicago_Press_Roger_W_Shugg_to_Carnap_1958-05-15_L/d:981606