Persistent identifier https://phaidra.univie.ac.at/o:1566793
Handle https://hdl.handle.net/11353/10.1566793
URI https://valep.vc.univie.ac.at/virtualarchive/public/Folder_55a_Three_Approaches_to_Inductive_Logic_Items_1-2_1956-1967_1956-1967/a:654057