o:1718922
Persistent identifier https://phaidra.univie.ac.at/o:1718921
Handle https://hdl.handle.net/11353/10.1718921
URI https://valep.vc.univie.ac.at/virtualarchive/public/Donald_A_Wells_APA_to_Carnap_Membership_Card_1965-12-11_L/d:956170