Persistent identifier https://phaidra.univie.ac.at/o:1714979
Handle https://hdl.handle.net/11353/10.1714979
URI https://valep.vc.univie.ac.at/virtualarchive/public/Roger_W_Shugg_University_of_Chicago_Press_to_Carnap_1959-08-27_L_Original/dv:981601